Absolute morality is the regulation of conduct in such a way that pain shall not be inflicted.

When men hire themselves out to shoot other men to order, asking nothing about the justice of their cause, I don't care if they are shot themselves.

People are beginning to see that the first requisite to success in life is to be a good animal.

Objects we ardently pursue bring little happiness when gained; most of our pleasures come from unexpected sources.

Feudalism, serfdom, slavery — all tyrannical institutions, are merely the most vigorous kinds of rule, springing out of, and necessary to, a bad state of man. The progress from these is in all cases the same — less government.

The wise man must remember that while he is a descendant of the past, he is a parent of the future.

This survival of the fittest which I have here sought to express in mechanical terms, is that which Mr. Darwin has called "natural selection", or the preservation of favoured races in the struggle for life.