"It is not uncommon for doctors to be asked by married couples of some years' standing for advice as to how to get children, and to find on examination that the couples have not known how to perform in…"

"I should not hold it desirable that either a man or a woman should enter upon the serious business of a marriage intended to lead to children without having had previous sexual experience."

"Mathematics, rightly viewed, possesses not only truth, but supreme beauty."

"There is one very serious defect to my mind in Christ's moral character, and that is that He believed in hell. I do not myself feel that any person who is really profoundly humane can believe in everl…"

"Freedom in education is a matter of degree."