Logic issues in tautologies, mathematics in identities, philosophy in definitions; all trivial, but all part of the vital work of clarifying and orga….

What we can't say we can't say, and we can't whistle it either..

We are in the ordinary position of scientists of having to be content with piecemeal improvements: we can make several things clearer, but we cannot ….

[I attach] little importance to physical size. I don't feel the least humble before the vastness of the heavens. The stars may be large, but they can….

My picture of the world is drawn in perspective and not like a model to scale. The foreground is occupied by human beings and the stars are all as sm….

Science, history and politics are not suited for discussion except by experts. Others are simply in the position of requiring more information; and, ….