...operational proof...it's all theory until you see for yourself whether or not something works. - Julia Child

Good french cooking cannot be produced by a zombie cook.

"When American experts began making "helpful" suggestions about how the French could "increase productivity and profits" the average Frenchman would shrug, as if to say: "These notions of yours are all very fascinating, no doubt, but we have a nice little business here just as it is. Everybody makes a decent living. Nobody has ulcers. I have time to work on my monograph about Balzac, and my foreman enjoys his espaliered pear trees. I think as a matter of fact, we do not wish to make the changes that you suggest.

Fat gives things flavor.