Some of the most profound quotes in my opinion:
Know thyself. - Socrates
The weak can never forgive. Forgiveness is the attribute of the strong. - Gandhi
Love all, trust a few, do wrong to none. - Shakespeare
Reality is merely an illusion, albeit a very persistent one. - Einstein
The constant assertion of belief is an indication of fear. -Krishnamurti
Ignorance, the root and stem of all evil. -Plato
What we think, we become. -Buddha