A wise man first thinks and then speaks and a fool speaks first and then thinks.

Stubbornness destroys good advice.

Whoever wants to be a leader should educate himself before educating others. Before preaching to others he should first practice himself. Whoever educates himself and improves his own morals is superior to the man who tries to teach and train others.

There is no capital more useful than intellect and wisdom, and there is no indigence more injurious than ignorance and unawareness.

Do not be like those on whom advice has no effect and who require punishment to correct themselves.

Knowledge is of two kinds: that which is absorbed and that which is heard. And that which is heard does not profit if it is not absorbed.

How many lessons there are and how little they are taken