"We will make electricity so cheap that only the rich will burn candles."
"Electricity is the same thing as light. It’s just that we see it differently."
"Genius is one percent inspiration and ninety-nine percent perspiration."
"I have not failed. I’ve just found 10,000 ways that won’t work."
"The best way to predict the future is to invent it."
"I never did a day's work in my life. It was all fun."
"What you are will show in what you do."