When the debate is lost, slander becomes the tool of the loser.
Nobody knows anything, but I, knowing nothing, am the smartest man in the world.
The easiest and noblest way is not to be crushing others, but to be improving yourselves.
Wisdom is knowing when you don't know
The beginning is the most important part, especially when dealing with anything young and tender.
One thing I know, that I know nothing. This is the source of my wisdom.