Instructions Full Game: These are multiple-choice quizzes with four possible answer choices that include all questions in a given set.     
Identify the following philosopher:

(1942-Present) American philosopher and professor at New York University. In "Ignorance" (1975), he argues that nobody knows anything and even that nobody is reasonable or justified in believing anything.
Thomas More
Ralph Waldo Emerson
Peter Unger
Thomas Hobbes