"If Edison had a needle to find in a haystack, he would proceed at once... until he found the object of his research. I was sorry witness of such doings, knowin

"If Edison had a needle to find in a haystack, he would proceed at once... until he found the object of his research. I was sorry witness of such doings, knowing that a little theory and calculations would have saved him 90 percent of his labor." -Nikola Tesla