Instructions 20Q Game: These are similar to full games, but for quizzes larger than 20 questions it will randomly select 20 questions from within the set. This is a quick way to get in some studying of a topic.     
Identify the following philosopher:

(1906-1978) Austro-Hungarian-born Austrian, and later American, logician, mathematician, and philosopher. Published his two incompleteness theorems in 1931 at age 25. Allowed mathematicians to assume the axiom of choice in their proofs.
Seneca the Younger
Kurt Gödel
Bertrand Russell
Zeno of Elea