Étienne Paul Marie Lamotte (November 21, 1903 – May 5, 1983) was a Belgian priest and Professor of Greek at the Catholic University of Louvain, but was better known as an Indologist and the greatest authority on Buddhism in the West in his time. He studied under his pioneering compatriot Louis de La Vallée-Poussin and was one of the few scholars familiar with all the main Buddhist languages: Pali, Sanskrit, Chinese and Tibetan. His first published work was his PhD thesis: Notes sur le Bhagavad-Gita (Paris, Geuthner, 1929). - In 1953, he was awarded the Francqui Prize in Human Science.
He is also known for his French translation of the Mahāprajñāpāramitāupadeśa (Chinese: 大智度論, English: Treatise on the Great Perfection of Wisdom), a text attributed to Nāgārjuna. Lamotte felt that the text was most likely composed by an Indian bhikkhu from the Sarvastivada tradition, who later became a convert to Mahayana Buddhism. Lamotte's translation was published in five volumes but unfortunately remains incomplete, since his death put an end to his efforts.
Paul Williams, author of a book review of one of Lamotte's books for the Journal of the Royal Asiatic Society, wrote that his "works are always more than just translations or interpretations. They are vast encyclopedias of references and primary source materials from half a dozen languages which he seems to handle with complete familiarity."
Manuscript English translations of the five volumes of the Da Zhidu Lun available from: