John Tyndall

“The brightest flashes in the world of thought are incomplete until they have been proven to have their counterparts in the world of fact.”

“The logical feebleness of science is not sufficiently borne in mind. It keeps down the weed of superstition, not by logic but by slowly rendering the mental soil unfit for its cultivation.”

“Knowledge once gained casts a light beyond its own immediate boundaries.”

“... though he [Michael Faraday] took no cities, he captivated all hearts.”

“Life is a wave, which in no two consecutive moments of its existence is composed of the same particles.”

“To him [Faraday], as to all true philosophers, the main value of a fact was its position and suggestiveness in the general sequence of scientific truth.”

“His [Faraday's] third great discovery is the Magnetization of Light, which I should liken to the Weisshorn among mountains-high, beautiful, and alone.”