Civilized people cannot fully satisfy their sexual instinct without love.

I do not think any reasonable person can doubt that in India, China and Japan, if the knowledge of birth control existed, the birthrate would fall very rapidly

Be scrupulously truthful, even if the truth is inconvenient, for it is more inconvenient when you try to conceal it.

If all our happiness is bound up entirely in our personal circumstances it is difficult not to demand of life more than it has to give.

There are still many people in America who regard depressions as acts of God. I think Keynes proved that the responsibility for these occurrences does not rest with Providence.

Science does not aim at establishing immutable truths and eternal dogmas; its aim is to approach the truth by successive approximations, without claiming that at any stage final and complete accuracy has been achieved.

Philosophy bakes no bread