Morality - Wikipedia

Allegory with a portrait of a Venetian senator (Allegory of the morality of earthly things)

Philosophical theories on the nature and origins of morality (that is, theories of meta-ethics) are broadly divided into two classes:

In-group preference is also helpful at the individual level for the passing on of one's genes. For example, a mother who favors her own children more highly than the children of other people will give greater resources to her children than she will to strangers', thus heightening her children's chances of survival and her own gene's chances of being perpetuated. Due to this, within a population, there is substantial selection pressure exerted toward this kind of self-interest, such that eventually, all parents wind up favoring their own children (the in-group) over other children (the out-group).

wisdom / knowledge; courage; humanity; justice; temperance; and transcendence