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:

(1889-1951) Austrian who worked primarily in the philosophy of mathematics, the mind, and language. Published "Tractatus Logico-Philosophicus" (1921), with his papers published posthumously in "Philosophical Investigations" (1953).
Plato
Ludwig Wittgenstein
Simone de Beauvoir
Hypatia of Alexandria