"The man who seeks to influence the course of history must not be afraid of unpopularity."

"The human mind, no matter how highly trained, cannot grasp the universe. We are in the position of a little child, entering a huge library whose walls are covered to the ceiling with books in many dif…"

"The greatest obstacle to discovery is not ignorance, but the illusion of knowledge."

"There can never be any real opposition between religion and science; for the one is the complement of the other. Every serious and reflective person realizes, I think, that the religious element in hi…"

"The development of a new idea is an act of creation."