Compassion motivates people to go out of their way to help the physical, mental, or emotional pains of another and themselves. Compassion is often regarded as having sensitivity, which is an emotional aspect to suffering. Though, when based on cerebral notions such as fairness, justice, and interdependence, it may be considered rational in nature and its application understood as an activity also based on sound judgment. There is also an aspect of equal dimension, such that an individual's compassion is often given a property of "depth", "vigor", or "passion". The etymology of "compassion" is Latin, meaning "co-suffering." Compassion involves "feeling for another" and is a precursor to empathy, the "feeling as another" capacity for better person-centered acts of active compassion; in common parlance active compassion is the desire to alleviate another's suffering.
Compassion involves allowing ourselves to be moved by suffering and experiencing the motivation to help alleviate and prevent it. An act of compassion is defined by its helpfulness. Qualities of compassion are patience and wisdom; kindness and perseverance; warmth and resolve. It is often, though not inevitably, the key component in what manifests in the social context as altruism. Expression of compassion is prone to be hierarchical, paternalistic and controlling in responses. Difference between sympathy and compassion is that the former responds to suffering from sorrow and concern while the latter responds with warmth and care.
The English noun compassion, meaning to suffer together with, comes from Latin. Its prefix com- comes directly from com, an archaic version of the Latin preposition and affix cum (= with); the -passion segment is derived from passus, past participle of the deponent verb patior, patī, passus sum. Compassion is thus related in origin, form and meaning to the English noun patient (= one who suffers), from patiens, present participle of the same patior, and is akin to the Greek verb πάσχειν (= paskhein, to suffer) and to its cognate noun πάθος (= pathos). Ranked a great virtue in numerous philosophies, compassion is considered in almost all the major religious traditions as among the greatest of virtues.
Theoretical perspectives of compassion have been developed through the years, the following three proposed perspectives show contrasts in their evolution and approaches to compassion.
Emma Seppala distinguishes compassion, from empathy, and altriusm as follows: "... The definition of compassion is often confused with that of empathy. Empathy, as defined by researchers, is the visceral or emotional experience of another person’s feelings. It is, in a sense, an automatic mirroring of another’s emotion, like tearing up at a friend’s sadness. Altruism is an action that benefits someone else. It may or may not be accompanied by empathy or compassion, for example in the case of making a donation for tax purposes. Although these terms are related to compassion, they are not identical. Compassion often does, of course, involve an empathic response and an altruistic behavior. However, compassion is defined as the emotional response when perceiving suffering and involves an authentic desire to help."
According to Thupten Jinpa, compassion is not the following: Compassion is not pity, Compassion is not attachment, Compassion is not the same as empathetic feeling, Compassion is not simply wishful thinking, Compassion is not self-regard.
The more one person knows about the human condition and the associated experiences, the more vivid the route to identification with suffering becomes. Identifying with another person is an essential process for human beings, it is commonly seen throughout the world as people adapt and change with new styles of clothing, language, behavior, etc., which is even illustrated by infants who begin to mirror the facial expressions and body movements of their mother as early as the first days of their lives. Personality psychology agrees that people are inherently different and distinct from one another, which leads to the conclusion that human suffering is always individual and unique. Suffering can result from psychological, social, and physical trauma and it happens in acute forms as often as chronically. Due to the inherent differences in people's personalities some may define their early stages of suffering to their external circumstances and those life events being quiet or not discussed. The later stages may involve the person expressing their victimization and searching for help. Suffering has been defined as the perception of a person's impending destruction or loss of integrity, which continues until the threat is vanished or the person's integrity can be restored. The importance of identifying with others for compassion is contrasted by the negative physical and psychological effects of abandonment. Compassion is often a characteristic element of democratic societies. Compassion is recognized through identifying with other people, the knowledge of human behavior, the perception of suffering, transfer of feelings, knowledge of goal and purpose changes in sufferers, and leads to the absence of the suffering from the group.
The compassion process is highly related to identifying with the other person because sympathizing with others is possible among people from other countries, cultures, locations, etc. A possible source of this process of identifying with others comes from a universal category called "Spirit." Toward the late 1970s, very different cultures and nations around the world took a turn to religious fundamentalism, which has occasionally been attributed to "Spirit". The role of compassion as a factor contributing to individual or societal behavior has been the topic of continuous debate. In contrast to the process of identifying with other people, a complete absence of compassion may require ignoring or disapproving identification with other people or groups. Earlier studies established the links between interpersonal violence and cruelty which leads to indifference. This concept has been illustrated throughout history: The Holocaust, Genocide, European colonization of the Americas, etc. The seemingly essential step in these atrocities could be the definition of the victims as "not human" or "not us." The atrocities committed throughout human history have only been relieved, minimized, or overcome it's damaging effects through the presence of compassion.
Compassion may have the ability to induce feelings of kindness and forgiveness, which could give people the ability to stop situations that have the potential to be distressing and occasionally lead to violence.
Compassion has become associated with and researched in the fields of positive psychology and social psychology. The Dalai Lama once said that "compassion is a necessity, not a luxury" and that "it is a question of human survival". Compassion is a process of connecting by identifying with another person. This identification with others through compassion can lead to increased motivation to do something in an effort to relieve the suffering of others.
Compassion is an evolved function from the harmony of a three grid internal system: contentment-and-peace system, goals-and-drives system and threat-and-safety system. Paul Gilbert defines these collectively as necessary regulated systems for compassion. Compassion consists of three major requirements: People must feel that troubles that evoke their feelings are serious, the understanding that sufferers' troubles are not self-inflicted, and ability to picture oneself with the same problems in a non-blaming and non-shaming manner.
Paul Ekman describes a "taxonomy of compassion" including: emotional recognition (knowing how another person feels), emotional resonance (feeling emotions another person feels), familial connection (care-giver-offspring), global compassion (extending compassion to everyone in the world), sentient compassion (extended compassion to other species), and heroic compassion (compassion that comes with a risk).
Indeed, Paul Ekman goes on further to make an important distinction between proximal (i.e. in the moment) and distal compassion (i.e. predicting the future; affective forecasting): "... it has implications in terms of how we go about encouraging compassion. We’re all familiar with proximal compassion: Someone falls down in the street, and we help him get up. That’s proximal compassion: where we see someone in need and we help them. But, when I used to tell my kids, “Wear a helmet,” that’s distal compassion: trying to prevent harm before it occurs. And that requires a different set of skills: It requires social forecasting, anticipating harm before it occurs, and trying to prevent it. Distal compassion is much more amenable to educational influences, I think, and it’s our real hope." Distal compassion also requires perspective-taking.
Compassion has been associated with important psychological outcomes including increases in mindfulness and emotion regulation. 
According to Figley, individuals with a higher capacity or responsibility to empathize with others may be at risk for "compassion fatigue" or stress, which is related to professionals and individuals who spend a significant amount of time responding to information related to suffering. However, newer research by Singer and Ricard suggests that it is lack of suitable distress tolerance which gets people fatigued in compassion activities. Smith mentions that people can alleviate the sorrow and distress by doing some self-care activities on a regular basis. Improving consciousness helps to guide people to recognize the impact and circumstances of past events. After people learn the experience from the situation in the past, they are able to find the causes of compassion fatigue in the their daily life. Research suggests that practice of nonjudgmental compassion can prevent fatigue and burnout. Smith provides some methods that can help people to heal compassion fatigue. People should do physical activity, eat healthy food with every meal, create good relations with others, enjoy interacting with others in the community, write a journal frequently, and sleep enough everyday.
Compassion fade is the tendency of people to experience a decrease in empathy as the number of people in need of aid increase, the term created by Psychologist Paul Slovic.   It is a type of cognitive bias that people use to justify their decision to help or lack of helping and ignoring certain information. The cognitive process involved is turning compassion in to compassionate behavior. First is the singular person's response to the group in need, followed by motivation to help that can lead to action.
In examination of the motivated regulation of compassion in the context of large-scale crises, such as natural disasters and genocides, much research has established that people tend to feel more compassion for single identifiable victims than large masses of victims (the Identifiable victim effect). It is found that people only show less compassion for many victims than for single victims of disasters when they expect to incur a financial cost upon helping. This collapse of compassion depends on having the motivation and ability to regulate emotions. In laboratory research, psychologists are exploring how concerns about becoming emotionally exhausted may motivate people to curb their compassion for—and dehumanize—members of stigmatized social groups, such as homeless individuals and drug addicts.
Jorge Moll and Jordan Grafman, neuroscientists at the National Institutes of Health and LABS-D'Or Hospital Network (J.M.) provided the first evidence for the neural bases of altruistic giving in normal healthy volunteers, using functional magnetic resonance imaging. In their research, published in the Proceedings of the National Academy of Sciences USA in October 2006, they showed that both pure monetary rewards and charitable donations activated the mesolimbic reward pathway, a primitive part of the brain that usually responds to food and sex. However, when volunteers generously placed the interests of others before their own by making charitable donations, another brain circuit was selectively activated: the subgenual cortex/septal region. These structures are intimately related to social attachment and bonding in other species. Altruism, the experiment suggested, was not a superior moral faculty that suppresses basic selfish urges but rather was basic to the brain, hard-wired and pleasurable. One brain region, the subgenual anterior cingulate cortex/basal forebrain, contributes to learning altruistic behavior, especially in those with trait empathy. The same study has shown a connection between giving to charity and the promotion of social bonding.
In fact, in an experiment published in March 2007 at the University of Southern California neuroscientist Antonio R. Damasio and his colleagues showed that subjects with damage to the ventromedial prefrontal cortex lack the ability to feel their way empathically to moral answers, and that when confronted with moral dilemmas, these brain-damaged patients coldly came up with "end-justifies-the-means" answers, leading Damasio to conclude that the point was not that they reached immoral conclusions, but that when they were confronted by a difficult issue — in this case as whether to shoot down a passenger plane hijacked by terrorists before it hits a major city — these patients appear to reach decisions without the anguish that afflicts those with normally functioning brains. According to Adrian Raine, a clinical neuroscientist also at the University of Southern California, one of this study's implications is that society may have to rethink how it judges immoral people: "Psychopaths often feel no empathy or remorse. Without that awareness, people relying exclusively on reasoning seem to find it harder to sort their way through moral thickets. Does that mean they should be held to different standards of accountability?"
In another study, in the 1990s, Dr. Bill Harbaugh, a University of Oregon economist, concluded people are motivated to give for reasons of personal prestige and in a similar fMRI scanner test in 2007 with his psychologist colleague Dr. Ulrich Mayr, reached the same conclusions of Jorge Moll and Jordan Grafman about giving to charity, although they were able to divide the study group into two groups: "egoists" and "altruists". One of their discoveries was that, though rarely, even some of the considered "egoists" sometimes gave more than expected because that would help others, leading to the conclusion that there are other factors in cause in charity, such as a person's environment and values.
Compassion is one of the most important attributes for physicians practicing medical services. It has been suggested that felt compassion brings about the desire to do something to help the sufferer. That desire to be helpful is not compassion, but it does suggest that compassion is similar to other emotions by motivating behaviors to reduce the tension brought on by the emotion. Physicians generally identify their central duties as the responsibility to put the patient's interests first, including the duty not to harm, deliver proper care, and maintain confidentiality. Compassion is seen in each of those duties because of its direct relation to the recognition and treatment of suffering. Physicians who use compassion understand the effects of sickness and suffering on human behavior. Compassion may be closely related to love and the emotions evoked in both. This is illustrated by the relationship between patients and physicians in medical institutions. The relationship between suffering patients and their caregivers provides evidence that compassion is a social emotion, which is highly related to the closeness between individuals.
Self-compassion is a process of self kindness and accepting suffering as a quality of being human. It has positive effects on subjective happiness, optimism, wisdom, curiosity, agreeableness, and extroversion. Kristin Neff and Christopher Germer have identified that there are three levels of activities that thwart self-compassion and they are self-criticism, self-isolation and self-absorption, they equate this to fight, flight and freeze responses. It has been found that parenting practices contribute to the development of self-compassion in children. Maternal support, secure attachment, and harmonious family functioning all create an environment where self-compassion can develop. On the other hand, certain developmental factors (i.e., personal fable) can hinder the development of self-compassion in children.
For increasing compassion in the workplace to self and others, authentic leadership centered on humanism and nourishing quality interconnectedness are considered as the key. Judith Jordan's concept of self-empathy is similar to self-compassion, it implies the capacity to notice, care and respond towards the ones own felt needs. The strategies of self-care involve valuing oneself, thinking about one's ideations of needs compassionately, and connecting with others in order to conversely experience renewal, support, and validation. Research indicates that self-compassionate individuals experience greater psychological health than those who lack self-compassion.
The Christian Bible's Second Epistle to the Corinthians is but one place where God is spoken of as the "Father of compassion" and the "God of all comfort." It reads as follows: 2 Corinthians 1:3–7 "Praise be to the God and Father of our Lord Jesus Christ, the Father of compassion and the God of all comfort, who comforts us in all our troubles, so that we can comfort those in any trouble with the comfort we ourselves received from God. For just as the sufferings of Christ flow over into our lives, so also through Christ our comfort overflows. If we are distressed, it is for your comfort and salvation; if we are comforted, it is for your comfort, which produces in you patient endurance of the same sufferings we suffer. And our hope for you is firm, because we know that just as you share in our sufferings, so also you share in our comfort." Jesus embodies for Christians, the very essence of compassion and relational care. Christ challenges Christians to forsake their own desires and to act compassionately towards others, particularly those in need or distress.[full citation needed] Most significantly, he demonstrated compassion to those his society had condemned – tax collectors, prostitutes and criminals, by saying "just because you received a loaf of bread, does not mean you were more conscientious about it, or more caring about your fellow man."
Conversely, a 2012 study of the historical Jesus has claimed that the founder of Christianity sought to elevate Judaic compassion as the supreme human virtue, capable of reducing suffering and fulfilling our God-ordained purpose of transforming the world into something more worthy of its creator.
In the Muslim tradition, foremost among God's attributes are mercy and compassion or, in the canonical language of Arabic, Rahman and Rahim. Each of the 114 chapters of the Quran, with one exception, begins with the verse, "In the name of Allah the Compassionate, the Merciful."
Certainly a Messenger has come to you from among yourselves; grievous to him is your falling into distress, excessively solicitous respecting you; to the believers (he is) compassionate.
The Arabic word for compassion is rahmah. As a cultural influence, its roots abound in the Quran. A good Muslim is to commence each day, each prayer and each significant action by invoking Allah the Merciful and Compassionate, i.e., by reciting Bism-i-llah a-Rahman-i-Rahim. The are characterized by compassion and named after the exalted attribute of Allah "Al-Rahim" (The Compassionate).
In the Jewish tradition, God is the Compassionate and is invoked as the Father of Compassion: hence Raḥmana or Compassionate becomes the usual designation for His revealed word. (Compare, below, the frequent use of raḥman in the Quran). Sorrow and pity for one in distress, creating a desire to relieve it, is a feeling ascribed alike to man and God: in Biblical Hebrew, ("riḥam," from "reḥem," the mother, womb), "to pity" or "to show mercy" in view of the sufferer's helplessness, hence also "to forgive" (Hab. iii. 2), "to forbear" (Ex. ii. 6; I Sam. xv. 3; Jer. xv. 15, xxi. 7). The Rabbis speak of the "thirteen attributes of compassion." The Biblical conception of compassion is the feeling of the parent for the child. Hence the prophet's appeal in confirmation of his trust in God invokes the feeling of a mother for her offspring (Isa. xlix. 15).
A classic articulation of the Golden Rule (see above) came from the first century Rabbi Hillel the Elder. Renowned in the Jewish tradition as a sage and a scholar, he is associated with the development of the Mishnah and the Talmud and, as such, one of the most important figures in Jewish history. Asked for a summary of the Jewish religion in the "while standing on one leg" meaning in the most concise terms, Hillel stated: "That which is hateful to you, do not do to your fellow. That is the whole Torah. The rest is the explanation; go and learn." Post 9/11, the words of Rabbi Hillel are frequently quoted in public lectures and interviews around the world by the prominent writer on comparative religion Karen Armstrong.
Many Jewish sources speak of the importance of compassion for animals. Significant rabbis who have done so include Rabbi Samson Raphael Hirsch, Rabbi Simhah Zissel Ziv, and Rabbi Moshe Cordovero.
The ancient Greek and Roman philosophers typically distrusted (feeling) compassion. In the view of many, reason alone was the proper guide to conduct. To some, compassion was an effect, neither admirable nor contemptible. Compassion historically is considered as a passion; Justitia is blindfolded because her virtue is dispassion and not compassion. In Roman society, in fact, compassion was often seen as a vice when it was inclined toward pity, as opposed to mercy. In other words, showing empathy toward someone who was seen as deserving was considered virtuous, whereas showing empathy to someone deemed unworthy was considered immoral (weak).
Mencius maintained that everyone possesses the germ or root of compassion, illustrating his case with the famous example of the child at an open well:
“Suppose a man were, all of a sudden, to see a young child on the verge of falling into a well. He would certainly be moved to compassion, not because he wanted to get into the good graces of the parents, nor because he wished to win the praise of his fellow-villagers or friends, nor yet because he disliked the cry of the child”.
The first of what in English are called the Four Noble Truths is the truth of suffering or dukkha (unsatisfactoriness or stress). Dukkha is identified as one of the three distinguishing characteristics of all conditioned existence. It arises as a consequence of the failure to adapt to change or anicca (the second characteristic) and the insubstantiality, lack of fixed identity, the horrendous lack of certainty of anatta (the third characteristic) to which all this constant change in turn gives rise. Compassion made possible by observation and accurate perception is the appropriate practical response. The ultimate and earnest wish, manifest in the Buddha, both as archetype and as historical entity, is to relieve the suffering of all living beings everywhere.
The Dalai Lama has said, "If you want others to be happy, practice compassion. If you want to be happy, practice compassion." The American monk Bhikkhu Bodhi states that compassion "supplies the complement to loving-kindness: whereas loving-kindness has the characteristic of wishing for the happiness and welfare of others, compassion has the characteristic of wishing that others be free from suffering, a wish to be extended without limits to all living beings. Like metta, compassion arises by entering into the subjectivity of others, by sharing their interiority in a deep and total way. It springs up by considering that all beings, like ourselves, wish to be free from suffering, yet despite their wishes continue to be harassed by pain, fear, sorrow, and other forms of dukkha."
In classical literature of Hinduism, compassion is a virtue with many shades, each shade explained by different terms. Three most common terms are daya (दया), karuṇā (करुणा), and anukampā (अनुकम्पा). Other words related to compassion in Hinduism include karunya, kripa, and anukrosha. Some of these words are used interchangeably among the schools of Hinduism to explain the concept of compassion, its sources, its consequences, and its nature. The virtue of compassion to all living beings, claim Gandhi and others, is a central concept in Hindu philosophy.
Daya is defined by Padma Purana as the virtuous desire to mitigate the sorrow and difficulties of others by putting forth whatever effort necessary. Matsya Purana describes daya as the value that treats all living beings (including human beings) as one's own self, wanting the welfare and good of the other living being. Such compassion, claims Matsya Purana, is one of necessary paths to being happy. Ekadashi Tattvam explains daya is treating a stranger, a relative, a friend and a foe as one's own self; it argues that compassion is that state when one sees all living beings as part of one's own self, and when everyone's suffering is seen as one's own suffering. Compassion to all living beings, including to those who are strangers and those who are foes, is seen as a noble virtue. Karuna, another word for compassion in Hindu philosophy, means placing one's mind in other's favor, thereby seeking to understand the other from their perspective. Anukampa, yet another word for compassion, refers to one's state after one has observed and understood the pain and suffering in others. In Mahabharata, Indra praises Yudhishthira for his anukrosha — compassion, sympathy — for all creatures. Tulsidas contrasts daya (compassion) with abhiman (arrogance, contempt of others), claiming compassion is a source of dharmic life, while arrogance a source of sin. Daya (compassion) is not kripa (pity) in Hinduism, or feeling sorry for the sufferer, because that is marred with condescension; compassion is feeling one with the sufferer. Compassion is the basis for ahimsa, a core virtue in Hindu philosophy.
Compassion in Hinduism is discussed as an absolute and relative concept. There are two forms of compassion: one for those who suffer even though they have done nothing wrong and one for those who suffer because they did something wrong. Absolute compassion applies to both, while relative compassion addresses the difference between the former and the latter. An example of the latter include those who plead guilty or are convicted of a crime such as murder; in these cases, the virtue of compassion must be balanced with the virtue of justice.
The classical literature of Hinduism exists in many Indian languages. For example, Tirukkuṛaḷ, written between 200 BC and AD 400, and sometimes called the Tamil Veda, is a cherished classic on Hinduism written in a South Indian language. It dedicates Chapter 25 of Book 1 to compassion, further dedicating separate chapters each for the resulting values of compassion, chiefly, vegetarianism or veganism (Chapter 26), doing no harm (Chapter 32), non-killing (Chapter 33), possession of kindness (Chapter 8), dreading evil deeds (Chapter 21), benignity (Chapter 58), the right scepter (Chapter 55), and absence of terrorism (Chapter 57), to name a few.
Compassion for all life, human and non-human, is central to the Jain tradition. Though all life is considered sacred, human life is deemed the highest form of earthly existence. To kill any person, no matter their crime, is considered unimaginably abhorrent. It is the only substantial religious tradition that requires both monks and laity to be vegetarian. It is suggested that certain strains of the Hindu tradition became vegetarian due to strong Jain influences. The Jain tradition's stance on nonviolence, however, goes far beyond vegetarianism. Jains refuse food obtained with unnecessary cruelty. Many practice veganism. Jains run animal shelters all over India. The Lal Mandir, a prominent Jain temple in Delhi, is known for the Jain Birds Hospital in a second building behind the main temple.