Edison vs. Tesla

“If I find 10,000 ways something won’t work, I haven’t failed. I am not discouraged, because every wrong attempt discarded is another step forward.”
Thomas A. Edison, Encyclopaedia Britannica

“Genius is one per cent inspiration, ninety-nine per cent perspiration.”
Thomas A. Edison, Harper’s Monthly, 1932

“If Edison had a needle to find in a haystack, he would proceed at once with the diligence of the bee to examine straw after straw until he found the object of his search… I was a sorry witness of such doings, knowing that a little theory and calculation would have saved him ninety per cent of his labor.”
Nikola Tesla, New York Times, October 19, 1931