"Between the Charybdis of inaccuracy and the Scylla of abstruseness, the course is narrow and the sea is rough."

"Matter, space, and time ... according to the relativist, are types of relations between events."

"The numerical side of the theory of relativity is derived from the failure of all attempts to detect the relative mot…"

"The aim of the scientist is to express, in as simple a statement as possible, the principles underlying the order and…"

"A ray of light, passing close to a heavy body, should, on Einstein's assumption, suffer a slight chance of direction,…"

"A great idea invariably creates as many problems as it solves: that is a sign of its greatness."

"A science in its infancy is the least satisfactory, and, at the same time, the most profitable theme for a general de…"

"It is as though a star throws the whole secret history of its being into its spectrum, and we have only to learn how …"

"What parts of the interior or the atmosphere give rise to the various phenomena, or indeed, if these regions have any…"

"I never really had any aspirations to be an actor when I was young. I wanted to play the piano in a bar, to be the ol…"