So of cheerfulness, or a good temper-- the more it is spent, the more of it remains.

Ralph Waldo Emerson

True knowledge exists in knowing that you know nothing.

Socrates

What is history? The lie that everyone agrees on.

Voltaire

I don't need sleep, I need answers. I need to determine where, in this swamp of unbalanced formulas, squatteth the toad of truth.

Sheldon Cooper

Knowledge makes a man unfit to be a slave.

Frederick Douglas

The best teachers are those who show you where to look but don't tell you what to see.

Alexandra K. Trenfor