Of all the frictional resistance, the one that most retards human movement is ignorance.

Nikola Tesla

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 as quoted in the New York Times 1931