We must press on then, in haste; not simply because every hour brings us nearer to death, but because even before then our powers of perception and comprehension begin to deteriorate.

Everything is only for a day, both that which remembers and that which is remembered. Observe constantly that all things take place by change, and accustom thyself to consider that the nature of the Universe loves nothing so much as to change the things which are and to make new things like them. For everything that exists is in a manner the seed of that which will be.

... 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.

The first rule is to keep an untroubled spirit. The second is to look things in the face and know them for what they are.

Treat with utmost respect your power of forming opinions, for this power alone guards you against making assumptions that are contrary to nature and judgments that overthrow the rule of reason.

We must press on then, in haste; not simply because every hour brings us nearer to death, but because even before then our powers of perception and comprehension begin to deteriorate.

It is a sin to persue pleasure as a good and to avoid pain as a evil.