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:

(1733-1804) English Separatist theologian, natural philosopher, and chemist. Credited with the discovery of oxygen. Defended phlogiston theory and rejected the chemical revolution which left him isolated in the scientific community.
Ludwig Wittgenstein
Augustine of Hippo
Joseph Priestley
Peter Abelard