"The few bad poems which occasionally are created during abstinence are of no great interest."

"Most intellectual people do not believe in God, but they fear him just the same."

"Only the liberation of the natural capacity for love in human beings can master their sadistic destructiveness."

"Scientific theory is a contrived foothold in the chaos of living phenomena."

"Honest pioneer work in the field of science has always been, and will continue to be, life's pilot. On all sides, life is surrounded by hostility. This puts us under an obligation."

"The fact that political ideologies are tangible realities is not a proof of their vitally necessary character. The bubonic plague was an extraordinarily powerful social reality, but no one would have regarded it as vitally necessary."

"Love, work, and knowledge are the wellsprings of our lives, they should also govern it."