How has all the knowledge in the world been gained but by the concentration of the powers of the mind? The world is ready to give up its secrets if we only know how to knock, how to give it the necessary blow. The strength and force of the blow come through concentration. There is no limit to the power of the human mind. The more concentrated it is, the more power is brought to bear on one point; that is the secret.
Swami VivekanandaAre you unselfish? That is the question. If you are, you will be perfect without reading a single religious book, without going into a single church or temple.
Swami VivekanandaPerfection is one thing and enjoyment another; these two having different ends, engage men differently.
Swami Vivekananda