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

"The scientific method is a never-ending process of refinement and correction."

"The history of science shows that the human mind is capable of understanding the most complex phenomena."

"Physics is a branch of knowledge which aims at the discovery of the laws governing the phenomena of nature."

"Religion and natural science are fighting a joint battle in an incessant, never-ending crusade against skepticism and against dogmatism, against unbelief and against superstition, and as the motto for…"