"A man's own judgement should be the final appeal in all that relates to himself."

"I had made up my mind to find that for which I was searching even if it required the remainder of my life. After innumerable failures I finally uncovered the principle for which I was searching, and I…"

"The true inventor is not the one who first conceives an idea, but the one who brings it to fruition."

"The telephone will be in every city, town, and village in the United States."

"Wherever you may find the inventor, you may give him wealth or you may take from him all that he has; and he will go on inventing. He can no more help inventing than he can help thinking or breathing."