Thrasymachus

(1) N. A person who argues for or upholds simple-minded solutions to important question which are neither agreeable to reason nor common sense, particularly with regard to ethics or theories of justice.

(2) N. An Ancient Greek Sophist mentioned in Plato's Republic.

(3) N. A fool.

Ex. 1
"Did you hear about the invasion of Iraq?"

"Yeah! George Bush is such a Thrasymacus!"

Ex. 2
"Isn't it obvious that people with the most money should have more rights than those who are destitute?"

"Careful there, friend; don't be a Thrasymachus."