We look twice at a tree. The first time we see its branches at rest, the second time in motion. We are not satisfied with this observation. Every glance at Nature evokes in us a multitude of questions. Every phenomenon we meet sets us a new problem.
Every experience is a riddle.
We see that from the egg there emerges a creature like the mother animal, and we ask the reason for the likeness. We observe a living being grow and develop to a certain degree of perfection, and we seek the underlying conditions for this experience. Nowhere are we satisfied with what Nature spreads out before our senses. Everywhere we seek what we call the explanation of the facts. The something more which we seek in things, over and above what is immediately given to us in them, splits our whole being into two parts.