"I could only with difficulty understand the enthusiasm of others for any but engineering achievements."

"If the genius of invention were to reveal to-morrow the secret of immortality, of eternal beauty and youth, for which all humanity is aching, the same inexorable agents which prevent a mass from chang…"

"The spread of civilization may be likened to a fire; first, a feeble spark, then a flickering flame, then a mighty conflagration, fiercely glowing and devouring."

"The day science begins to study non-physical phenomena, it will make more progress in one decade than in all the previous centuries of its existence."

"I don't care that they stole my idea . . I care that they don't have any of their own."