There are no new lies, no new heresies. Man is simply not that creative.

The doctrine of human equality reposes on this: that there is no man really clever who has not found that he is stupid.

The center of every man's existence is a dream.

Some of the most frantic lies on the face of life are told with modesty and restraint; for the simple reason that only modesty and restraint will save them.

To mix science up with philosophy is only to produce a philosophy that has lost all its ideal value and a science that has lost all its practical value. It is for my private physician to tell me whether this or that food will kill me. It is for my private philosopher to tell me whether I ought to be killed.

I might inform those humanitarians who have a nightmare of new and needless babies (for some humanitarians have that sort of horror of humanity) that if the recent decline in the birth-rate were continued for a certain time, it might end in there being no babies at all; which would console them very much.

Progress is Providence without God. That is, it is a theory that everything has always perpetually gone right by accident. It is a sort of atheistic optimism, based on an everlasting coincidence far more miraculous than a miracle.