“We are striking it big in the electric light, better than my vivid imagination first conceived. Where this thing is going to stop Lord only knows.”

“It is apparent to me that the possibilities of the aeroplane, which two or three years ago were thought to hold the solution to the [flying machine] problem, have been exhausted, and that we must turn elsewhere.”

“Oh these mathematicians make me tired! When you ask them to work out a sum they take a piece of paper, cover it with rows of A's, B's, and X's and Y's ... scatter a mess of flyspecks over them, and then give you an answer that's all wrong!”

“I get my ideas from listening from within.”

“In creating technology for ourselves we created it for the world.”

“The one prudence in life is concentration; the one evil is dissipation: and it makes no difference whether our dissipations are coarse or fine; property and its cares, friends and a social habit, or politics, or music, or feasting. Everything is good which takes away one plaything and delusion more, and drives us home to add one stroke of faithful work.”

“Concentration is the secret of srength.”

“How much more the seeker of abstract truth, who needs periods of isolation, and rapt concentration, and almost a going out of thebody to think!”