If you do not wish to be prone to anger, do not feed the habit; give it nothing which may tend to its increase. At first, keep quiet and count the days when you were not angry: "I used to be angry every day, then every other day: next, every two, then every three days!" and if you succeed in passing thirty days, sacrifice to the gods in thanksgiving.

The soul's impurity consists in bad judgements, and purification consists in producing in it right judgements, and the pure soul is one which has right judgements, for this alone is proof against confusion and pollution in its functions.

Act your part with honor.

It is impossible for a man to learn what he thinks he already knows.

When therefore we are hindered, or disturbed, or grieved, let us never attribute it to others, but to ourselves; that is, to our own principles. An uninstructed person will lay the fault of his own bad condition upon others. Someone just starting instruction will lay the fault on himself. Some who is perfectly instructed will place blame neither on others nor on himself.

What concerns me is not the way things are, but rather the way people think things are.

To live a life of virtue, you have to become consistent, even when it isn't convenient, comfortable, or easy.