There are those men who say to repay evil with kindness. But I say, how then are we to repay kindness? Repay kindness with kindness, but repay evil with justice.

It is only the very wisest and the very stupidest who never change.

Don't be concerned that you have no position; be concerned how you may fit yourself to occupy one. .

To see and listen to the wicked is already the beginning of wickedness.

Table your mistakes, learn from them, then move on.

Thought, unassisted by learning, is dangerous.

Ah, music, sacred tongue of God! I hear thee calling and I come.