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:

(1079-1142) Medieval French scholastic philosopher and theologian. Describes as "the keenest thinker and boldest theologian of the 12th Century". His affair with Héloïse d'Argenteuil has become legendary.
Martin Heidegger
Peter Abelard
Ayn Rand
Søren Kierkegaard