You have to appear wiser and more prudent than is required by the people you are dealing with if you want to give a high opinion of yourself.
To overvalue something is a form of lying.
Never risk your reputation on a single shot, for if you miss the loss is irreparable.
Quit while you're ahead. All the best gamblers do.
Life is a warfare against the malice of others.
The path to greatness is along with others.