What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
(1881–1955), French Jesuit philosopher and palaeontologist. He is best known for his theory, blending science and Christianity, that man is evolving mentally and socially toward a perfect spiritual state. The Roman Catholic Church declared his views were unorthodox and his major works (e.g. The Phenomenon of Man, 1955) were published posthumously.