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:

(121-180) Roman emperor from 161 to 180 and a Stoic philosopher. The last of the rulers known as the Five Good Emperors, and the last emperor of the Pax Romana, an age of relative peace and stability for the Roman Empire.
Immanuel Kant
Kurt GΓΆdel
David Hume
Marcus Aurelius