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

It is as though a star throws the whole secret history of its being into its spectrum, and we have only to learn how to read it aright in order to solve the most abstruse problems of the physical Universe.

The numerical side of the theory of relativity is derived from the failure of all attempts to detect the relative motion of matter and ether.

The aim of the scientist is to express, in as simple a statement as possible, the principles underlying the order and arrangement of phenomena.