All serious innovation is only rendered possible by some accident enabling unpopular persons to survive.

Religions that teach brotherly love have been used as an excuse for persecution, and our profoundest scientific insight is made into a means of mass destruction.

Philosophy bakes no bread

The practice of inhibiting impulses, which is to a great extent necessary to civilized life, makes mistakes easier, by preventing experience of the actions to which a desire would otherwise lead, and by often causing the inhibited impulses themselves to be unnoticed or quickly forgotten.

It has been said that man is a rational animal. All my life I have been searching for evidence which could support this.

The wise use of leisure, it must be conceded, is a product of civilization and education.

The thing that I should wish to obtain from money would be leisure with security.