If you seek to understand the whole universe you will understand nothing at all but seek to understand yourself and you will understand the whole universe.
Power invariably elects to go into the hands of the strong. Strength may be physical, or of the heart or, if we do not fight shy of the word, of the spirit. Strength of the heart connotes soul-force. Let it be remembered that physical force is transitory. But the power of spirit is permanent even as the spirit is everlasting.
Hanuman, the devotee of Rama, said: When I identify myself with the body, O Lord, I am Thy creature, eternally separate from Thee. When I identify myself with the soul, I am a spark of that Divine Fire which Thou art. But when I identify myself with the Atman, I and Thou art one.

