I like a bit of mongrel myself, whether it's a man or a dog.

Use your health, even to the point of wearing it out. That is what it is for. Spend all you have before you die; do not outlive yourself.

The great secret...is not having bad manners or good manners...but having the same manner for all human souls.

Man is the only animal which esteems itself rich in proportion to the number and voracity of its parasites.

Perhaps you know some well-off families who do not seem to suffer from their riches. They do not overeat themselves; they find occupations to keep themselves in health; they do not worry about their position; they put their money into safe investments and are content with a low rate of interest; and they bring up their children to live simply and do useful work. But this means that they do not live like rich people at all, and might therefore just as well have ordinary incomes.

Morals are a luxury of the rich.

But whether the risks to which liberty exposes us are moral or physical our right to liberty involves the right to run them. A man who is not free to risk his neck as an aviator or his soul as a heretic is not free at all; and the right to liberty begins, not at the age of 21 years but 21 seconds.