Pierre Teilhard de Chardin (1881-1955) was a priest , paleontologist and geologist whose highly original publication, LE PHENOMENE HUMAIN, attracted world-wide attention when it was first published. He wrote of the beginnings of our planet, the emergence of life, the birth of thought and the development of socialization in order to give humankind the inner vision necessary to thrive in an expanding universe. The original translation into English contained many fundamental mistakes clouding our understanding of Teilhard de Chardin's vision. Sarah Appleton-Weber has based her new translation, which is endorsed by the Teilhard de Chardin Foundation (Paris), on her careful comparison of the four versions of the French text. Poet and scholar Appleton-Weber, who has closely studied Teilhard's essays, letters, and other writing, gives a consistent and coherent voice to this translation of Teilhard's book.