If you want to study yourself, look into the hearts of other people. If you want to study other people, look into your own heart.
Friedrich SchillerEach state of the human mind has some parable in the physical creation by which it is shadowed forth; nor is it only artists and poets, but even the most abstract thinkers that have drawn from this source. Lively activity we name fire; time is a stream that rolls on, sweeping all before it; eternity is a circle; a mystery is hid in midnight gloom, and truth dwells in the sun. Nay, I begin to believe that even the future destiny of the human race is prefigured in the dark oracular utterances of bodily creation.
Friedrich Schiller