Pol Pot - he rounded up anybody he thought was intellectual and had them executed. And how he told someone was intellectual or not was whether they wore glasses. If they're that clever, take them off when they see him coming!
“It's a funny thing - when I'm crazed with work, spending time with my children relaxes me. Yet, at the end of a long weekend with them, the very thing I need to relax is a little work and time away from them!”