"In crystal we have a pure evidence of the existence of a formative life principle, and although in spite of everything we cannot understand the life of crystals - it is still a living being."

"The year 2100 will see eugenics universally established. In past ages, the law governing the survival of the fittest roughly weeded out the less desirable strains. Then man's new sense of pity began t…"

"The present is theirs; the future, for which I have really worked, is mine."

"What one man calls God, another calls the laws of physics."

"The greatest discoveries have been made by men of science who have not been afraid to depart from the beaten path."