The surest sign that you haven't any sense is to argue with one who hasn't.
Computers can solve all kinds of problems except the unemployment problem they create.
Ignorance is the mother of research.
Middle age is when work is a lot less fun and fun is a lot more work.
No committee could ever come up with anything as revolutionary as a camel - anything as practical and as perfectly designed to perform effectively under such difficult conditions.
Before publishers' blurbs were invented, authors had to make their reputations by writing.