"If you can't fix it, fix it to where it can't be fixed." My dad, on not being able to fix something but not wanting someone else to come behind him and fix it.
"Lad, that piece of equipment you are working on is complicated. It has 2 levers on it. Lever A, and the one you need to focus on - LEVER Be".
An old mechanic, well, he was old in 1979.