The greatest minds are capable of the greatest vices as well as of the greatest virtues.
It is tact that is golden, not silence.
Whatever it is you're seeking won't come in the form you're expecting.
Strength does not come from physical capacity. It comes from an indomitable will.
If you place your head in a lion's mouth, then you cannot complain one day if he happens to bite it off.
Good means not merely not to do wrong, but rather not to desire to do wrong.
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self.
Adapt what is useful, reject what is useless, and add what is specifically your own.
Nobody has the power to take two steps together; you can take only one step at a time.
It was a melancholy secret that reality can arouse desires but never satisfy them.
In anger we should refrain both from speech and action.
The more skilled you are at something, the worse you are at it when showing someone.
A man who as a physical being is always turned toward the outside, thinking that his happiness lies outside him, finally turns inward and discovers that the source is within him.
Work is the price which is paid for reputation.
If you're happy, don't worry you'll get over it.
Each problem that I solved became a rule which served afterwards to solve other problems.
A person who spends more than he earns is a fool
To do great things is difficult, but to command great things is more difficult.
The essence of knowledge is, having it, to apply it; not having it, to confess your ignorance.
Immoderate desire is the mark of a child, not a man.
It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends.