For nowhere either with more quiet or more freedom from trouble does a man retire than into his own soul, particularly when he has within him such thoughts that by looking into them he is immediately in perfect tranquility; and I affirm that tranquility is nothing else than the good ordering of the mind.

Limit time to the present. Meditate upon your last hour.

When forced, as it seems, by your environment to be utterly disquieted, return with all speed into your self, staying in discord no longer than you must. By constant recurrence to the harmony, you will gain more command over it.

... Allow yourself a space of quiet, wherein you can add to your knowledge of the Good and learn to curb your restlessness. Guard also against another kind of error: the folly of those who weary their days in much business, but lack any aim on which their whole effort, nay, their whole thought, is focused.

A great estate is a great disadvantage to those who do not know how to use it, for nothing is more common than to see wealthy persons live scandalously and miserably; riches do them no service in order to virtue and happiness; therefore 'tis precept and principle, not an estate, that makes a man good for something.

And yet, after all, what is posthumous fame? Altogether vanity.

Why should we feel anger at the world? As if the world would notice?