It is better to advise than upbraid, for the one corrects the erring; the other only convicts them.
When you want to hear a philosopher, do not say, 'You say nothing to me'; only show yourself worthy or fit to hear, and then you will see how you will move the speaker.
Man is not fully free unless he is master of himself.
We tell lies, yet it is easy to show that lying is immoral.
Never look for your work in one place and your progress in another.
If you see anybody wail and complain, call him a slave, though he be clad in purple.