Never contract friendship with a man that is not better than thyself.

To know is to know that you know nothing. That is the meaning of true knowledge.

Do not use a cannon to kill a mosquito.

To be fond of learning is near to wisdom; to practice with vigor is near to benevolence; and to be conscious of shame is near to fortitude.

When you meet someone better than yourself, turn your thoughts to becoming his equal. When you meet someone not as good as you are, look within and examine your own self.

If you want happiness for a year, inherit a fortune. If you want happiness for a lifetime, help someone else.

Although your father and mother are dead, if you propose to yourself any good work, only reflect how it will make their names illustrious, and your purpose will be fixed.