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 percent of his labor.
Then some of the Pharisees and teachers of the law said to him, “Teacher, we want to see a sign from you.”Matthew 12:38 NIV
Genius is one percent inspiration, ninety-nine percent perspiration.Thomas Edison