Property should be in a certain sense common, but, as a general rule, private; for, when every one has a distinct interest, men will not complain of one another, and they will make more progress, because every one will be attending to his own business.

... There must then be a principle of such a kind that its substance is activity.

A gentleman is not disturbed by anything

The body is most fully developed from thirty to thirty-five years of age, the mind at about forty-nine.

A man is his own best friend; therefore he ought to love himself best.

The unfortunate need people who will be kind to them; the prosperous need people to be kind to.

Philosophy begins with wonder.