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

Not things, but opinions about things, trouble men.

I must die. I must be imprisoned. I must suffer exile. But must I die groaning? Must I whine as well? Can anyone hinder me from going into exile with a smile? The master threatens to chain me: what say you? Chain me? My leg you will chain--yes, but not my will--no, not even Zeus can conquer that.

If you would be well spoken of, learn to be well-spoken; and having learnt to be well- spoken, strive also to be well-doing; so shall you succeed in being well spoken of.

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.

There is only one thing for which God has sent me into the world, and that is to develop every kind of virtue or strength, and there is nothing in all the world that I cannot use for this purpose.

Who is not attracted by bright and pleasant children, to prattle, to creep, and to play with them?