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

A ray of light, passing close to a heavy body, should, on Einstein's assumption, suffer a slight chance of direction, as if it were pulled towards the body. According to Newton's principles, there seems to be no reason why the light should be bent at all. It is possible, however, that light possesses the equivalent of weight in a material body, and, if so, the gravitational force should cause a bending similar to that predicted by the theory of relativity, but of only half the amount.

It is the event that is the immediate entity of perception; Nature is the sum-total of events, and every instrument of thought that our minds employ can be traced back to its ultimate origin in events.

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