Famous quotes containing the words silver and/or crystals:
“By what a delicate and far-stretched contribution every island is made! What an enterprise of nature thus to lay the foundations of and to build up the future continent, of golden and silver sands and the ruins of forests, with ant-like industry.”
—Henry David Thoreau (1817–1862)
“It is clear that everybody interested in science must be interested in world 3 objects. A physical scientist, to start with, may be interested mainly in world 1 objects—say crystals and X-rays. But very soon he must realize how much depends on our interpretation of the facts, that is, on our theories, and so on world 3 objects. Similarly, a historian of science, or a philosopher interested in science must be largely a student of world 3 objects.”
—Karl Popper (1902–1994)