A blow from your friend is better than a kiss from your enemy.
Let no one persuade you by word or deed to do or say whatever is not best for you.
Concern should drive us into action and not into a depression. No man is free who cannot control himself.
God built the universe on numbers.
It is required to find the infinitely big inside what's infinitely small to feel the presence of God.
A man is never as big as when he is on his knees to help a child.