Machines deprive us of two things which are certainly important ingredients of human happiness, namely, spontaneity and variety.

I am sometimes shocked by the blasphemies of those who think themselves pious.

Unhappy business men, I am convinced, would increase their happiness more by walking six miles every day than by any conceivable change of philosophy.

Have no respect for the authority of others, for there are always contrary authorities to be found

A good man will never suspect his friends of shady actions: this is part of his goodness. A good man will never be suspected by the public of using his goodness to screen villains: this is part of his utility

There is an artist imprisoned in each one of us. Let him loose to spread joy everywhere.

In the first place a philosophical proposition must be general. It must not deal specially with things on the surface of the earth, or within the solar system, or with any other portion of space and time. . . . This brings us to a second characteristic of philosophical propositions, namely that they must be a priori. A philosophical proposition must be such as can neither be proved nor disproved by empirical evidence. . . . Philosophy, if what has been said is correct, becomes indistinguishable from logic as that word has now come to be used.