It is not the strongest of the species that survives, nor the most intelligent, but rather the one most adaptable to change.

Although I did not think much about the existence of a personal God until a considerably later period of my life, I will here give the vague conclusions to whi…

A mathematician is a blind man in a dark room looking for a black cat which isn't there.

I can indeed hardly see how anyone ought to wish Christianity to be true; for if so the plain language of the text seems to show that the men who do not believ…

Notice that the stiffest tree is most easily cracked, while the bamboo or willow survives by bending with the wind.

The philosophies of one age have become the absurdities of the next, and the foolishness of yesterday has become the wisdom of tomorrow.

I am a man of fixed and unbending principles, the first of which is to be flexible at all times.