"If you really understand something, you can: 1) explain it using a clear metaphor and 2) explain the strongest counter-argument to the idea."

Next Quote

In claiming that prohibition, not the drugs themselves, is the problem, Nadelmann and many others - even policemen - have said that "the war on drugs is lost." But to demand a yes or no answer to the question "Is the war against drugs being won?" is like demanding a yes or no answer to the question "Have you stopped beating your wife yet?" Never can an unimaginative and fundamentally stupid metaphor have exerted a more baleful effect upon proper thought.

— Theodore Dalrymple