Almost every famous person at least once in their life said something that was remembered by the society, and considered meaningful, important or just funny. Those quotations can be mentioned in various situations. Often they are used in speeches or in a humorous way. In order to find some of them grub around.
Ausonius
Date: March 11, 2008
If you are a terror to many, then beware of many.
Begin -- to begin is half the work, let half still remain; again begin this, and thou wilt have finished.
Truth is the mother of hatred.
Forgive many things in others; nothing in yourself.
He who does not know how to be silent will not know how to speak.
Things that we hear pass quicker from our minds than what we read.