In memoriam on the death of Tony Benn, one of the last of the radical left in British politics, I recall his aphorism on power

What power have you got?
Where did you get it from?
In whose interests do you use it?
To whom are you accountable?
How do we get rid of you?

and wonder whether there are other aphorisms we might gather together as a form of folk wisdom, such as

Diplomacy is the art of having someone else have your own way - and getting the credit for it.

Any other suggestions?