Pierre Teilhard de Chardin 1 May 1881, Orcines, France – 10 April 1955, New York City) was a French philosopher and Jesuit priest who trained as a paleontologist and geologist and took part in the discovery of Peking Man. Teilhard conceived the idea of the Omega Point and developed Vladimir Vernadsky's concept of Noosphere.

Teilhard's primary book, The Phenomenon of Man, set forth a sweeping account of the unfolding of the cosmos. He abandoned traditional interpretations of creation in the Book of Genesis in favor of a less strict interpretation. This displeased certain officials in the Roman Curia, who thought that it undermined the doctrine of original sin developed by Saint Augustine. Teilhard's position was opposed by his church superiors, and his work was denied publication during his lifetime by the Roman Holy Office. The 1950 encyclical Humani generis condemned several of Teilhard's opinions, while leaving other questions open.