Note 2 — Chapter XIII · 1891. “MORE SCIENCE.”
Reading edition
Edison has said that he does not philosophize. Like General Grant, he is a man of action. When asked what theory he held upon a subject under discussion, General Grant replied, “I never theorize: when there is anything to be done, I do it.”2 Edison is always doing something which the public can see and appreciate, but, unlike Keely, he has no system to work out and transmute into the pure philosophy which is now revealing to the world “the further link in the chain of causation,” “the cause of the cause,” which hitherto has rather been assumed than demonstrated.