We hate to have some people give us advice because we know how badly they need it themselves.
The incompetent with nothing to do can still make a mess of it.
Middle age is when anything new in the way you feel is most likely a symptom.
Every man serves a useful purpose: a miser, for example, makes a wonderful ancestor.
Ignorance once dispelled is difficult to reestablish.
Incompetence plus incompetence equals incompetence.