Ill-digested principles are, if anything, worse than ill-digested food, for the latter harms the body and there is cure for it, whereas the former ruins the soul and there is no cure for it.
I got up one morning and couldn't find my socks, so I called Information. She said, "Hello, Information." I said, "I can't find my socks." She said, "They're behind the couch." And they were!