"All sensible people know that if you are tired and hungry a meal
will do you good. But the modern theory of nourishment-all about
the vitamins and proteins-is a different thing. People ate their
dinners and felt better long before the theory of vitamins was
ever heard of; and if the theory of vitamins is some day abandoned
they will go on eating their dinners just the same."
- C.S. Lewis, "Mere Christianity", 54.