For as long as one has no further point of reference, apart from the position of the maximum, the wavelength thus remains uncertain by an integral factor. — Max von Laue Copy Share Image
“What remains uncertain, rather, is whether this gain in evidence and (we might as well say it) splendor is due to the slow retreat of the sky, which as it moves away, sinks deeper and deeper into darkness, or whether… — Italo Calvino Copy Share Image
