When you have exhausted all possibilities, remember this - you haven't.

I owe my success to the fact that I never had a clock in my workroom. Seventy-five of us worked twenty hours every day and slept only four hours - and thrived on it.

The real measure of success is the number of experiments that can be crowded into 24 hours.

I get my ideas from listening from within.

I am a vegetarian as well as a passionate anti-alcoholic, because I can thus make better use of my brain.

Friendship is the heaven of life.

I never did anything worth doing by accident, nor did any of my inventions come indirectly through accident, except the phonograph. No, when I have, fully decided that a result is worth getting, I go about it, and make trial after trial, until it comes.