Scientific principles and laws do not lie on the surface of nature. They are hidden, and must be wrested from nature by an active and elaborate technique of inquiry.

John Dewey

What we observe is not nature itself, but nature exposed to our method of questioning.

Werner Heisenberg

In the spring and summer I watched my plants flower, but it was, perhaps, in winter that I loved them best, when their skeletons were exposed. Then I felt they had more to say to me, were not simply dressing themselves for the crowds.