(By way partial of support for quote I perceive to be downvoted too far.)

The only valid political system is one that can handle an imbecile in power without suffering from it.

While the quote has the typical problems of hyperbole found in this kind of soundbite, the principle conveyed seems sound. Minimising the damage that can be done by stupid people with power is one of the more important desideratum when designing a system of power allocation.