He who receives a benefit should never forget it; he who bestows should never remember it.

God, Nature, the wise, the world, preach man, exhort him both by word and deed to the study of himself.

Mutability is the badge of infirmity. It is seldom that a man continues to wish and design the same thing two days alike. Now he is for marrying; and now a mistress is preferred to a wife. Now he is ambitious and aspiring; presently the meanest servant is not more humble than he. This hour he squanders his money away; the next he turns miser. Sometimes he is frugal and serious; at other times profuse, airy, and gay.

Gratitude is a duty none can be excused from, because it is always at our own disposal.

Gratitude is a virtue disposing the mind to an inward sense and an outward acknowledgment of a benefit received, together with a readiness to return the same, or the like, as occasions of the doer of it shall require, and the abilities of the receiver extend to. He who receives a good turn, should never forget it: he who does one, should never remember it.

The most excellent and divine counsel, the best and most profitable advertisement of all others, but the least practised, is to study and learn how to know ourselves. This is the foundation of wisdom and the highway to whatever is good. . . . God, Nature, the wise, the world, preach man, exhort him both by word and deed to the study of himself.

He that boasts of his ancestors confesses that he has no virtue of his own. No person ever lived for our honor; nor ought that to be reputed ours, which was long before we had a being; for what advantage can it be to a blind man to know that his parents had good eyes? Does he see one whit the better?