Ants and savages put strangers to death.

Everybody can do something toward creating in his own environment kindly feelings rather than anger, reasonableness rather than hysteria, happiness rather than misery.

All the conditions of happiness are realized in the life of the man of science.

It is undesirable to believe a proposition when there is no ground whatever for supposing it true

Even when the experts all agree, they may well be mistaken.

With equal passion I have sought knowledge. I have wished to understand the hearts of men. I have wished to know why the stars shine. And I have tried to apprehend the Pythagorean power by which number holds sway about the flux. A little of this, but not much, I have achieved.

There is something feeble and a little contemptible about a man who cannot face the perils of life without the help of comfortable myths.