Many thanks to insidious truth, for putting me onto the hunt for the origin of this quote:
"When I was young, I said to G-d, G-d, tell me the mystery of the universe. But G-d answered, that knowledge is for me alone. So I said, G-d, tell me the mystery of the peanut. Then G-d said, well, George, that's more nearly your size." George Washington Carver.
Carver went on to revolutionize and enrich the lives of poor, southern, black sharecroppers with his bulletin How to Grow the Peanut and 105 Ways of Preparing it for Human Consumption, first published in 1916.
And with similar bulletins about the cultivation and uses of sweet potatoes, alfalfa, wild plum, tomato, ornamental plants, corn, poultry, dairying, hogs, and the preservation of meats in hot weather.
Check out Wikipedia's wonderful article about Carver and his life's work here.