Materials are indifferent, but the use which we make of them is not a matter of indifference.

Show that you know this only, how you may never either fail to get what you desire or fall into what you avoid.

For on these matters we should not trust the multitude who say that none ought to be educated but the free, but rather to philosophers, who say that the educated alone are free.

For what is a child? Ignorance. What is a child? Want of instruction. For where a child has knowledge, he is no worse than we are.

For it is not death or pain that is to be feared, but the fear of pain or death.

For what is lacking now is not quibbles; nay, the books of the Stoics are full of quibbles.

The essence of the good is a certain kind of moral purpose, and that of the evil is a certain kind of moral purpose.

For human beings, the measure of every action is the impression of the senses.

Appearances to the mind are of four kinds. Things either are what they appear to be; or they neither are, nor appear to be; or they are, and do not appear to be; or they are not, and yet appear to be. Rightly to aim in all these cases is the wise man's task.

In theory there is nothing to hinder our following what we are taught; but in life there are many things to draw us aside.