b. 1932
Alvin Plantinga (b. 1932) is an American analytic philosopher widely regarded as the most influential philosopher of religion of the twentieth century. He is best known for his free will defense against the logical problem of evil, his revival of the ontological argument in modal logical form, and his foundational work in Reformed epistemology. His career spanned Calvin College and the University of Notre Dame, where he shaped a generation of philosophers working at the intersection of analytic philosophy and Christian theology.
Developed the Free Will Defense, showing the logical problem of evil does not disprove theism
Reformulated the ontological argument using possible worlds semantics in modal logic
Founded Reformed Epistemology, arguing theistic belief can be 'properly basic' without inferential justification
Formulated the Evolutionary Argument Against Naturalism (EAAN), challenging the epistemic credentials of naturalism
Co-founded the Society of Christian Philosophers and transformed philosophy of religion into a rigorous analytic subdiscipline
The truth of a proposition in a world does not entail that the proposition exists in that world
claimThe 'no false lemmas' condition is not a successful general solution to the Gettier problem
claimTestimonial justification can be generated through a chain of testimony even when the transmitting testifier lacks justified belief