The most energetic workers I have encountered in my world travels are the vegetarian miners of Chile.

Everything in nature is the result of fixed laws.

Thomson's views on the recent age of the world have been for some time one of my sorest troubles.

Why does man regret, even though he may endeavour to banish any such regret, that he has followed the one natural impulse, rather than the other; and why does he further feel that he ought to regret his conduct? Man in this respect differs profoundly from the lower animals.

Man, wonderful man, must collapse, into nature's cauldron, he is no deity, he is no exception.

If man had not been his own classifier, he would never have thought of founding a separate order for his own reception.

I cannot persuade myself that a beneficient and omnipotent God would have designedly created...that a cat should play with mice.