A man's true greatness lies in the consciousness of an honest purpose in life, founded on a just estimate of himself and everything else, on frequent self-examinations, and a steady obedience to the rule which he knows to be right, without troubling himself about what others may think or say, or whether they do or do not that which he thinks and says and does.

The memory of everything is very soon overwhelmed in time.

Look back over the past, with its changing empires that rose and fell, and you can foresee the future, too.

Remember how often you have postponed minding your interest, and let slip those opportunities the gods have given you. It is now high time to consider what sort of world you are part of, and from what kind of governor of it you are descended; that you have a set period assigned you to act in, and unless you improve it to brighten and compose your thoughts, it will quickly run off with you, and be lost beyond recovery.

It is a ridiculous thing for a man not to fly from his own badness, which is indeed possible, but to fly from other men's badness, which is impossible.

The wise man sees in the misfortune of others what he should avoid.

As for others whose lives are not so ordered, he reminds himself constantly of the characters they exhibit daily and nightly at home and abroad, and of the sort of society they frequent; and the approval of such men, who do not even stand well in their own eyes, has no value for him.