Lesson #10—Alvin Plantinga (21^st century):  Moral virtue is crucial for intellectual health.  Plantinga is one of the premier Christian thinkers of the last generation.  At a time when theists were retreating in the philosophical community, he had the temerity to suggest that belief in God is not only reasonable but is in fact a proper starting placefor knowledge.  This was, of course, axiomatic for the Reformers, but Plantinga made a persuasive philosophical case for the idea.  In light of this insight, he has developed a rich Christian psychology (especially in his Warranted Christian Belief), complete with an arresting account of how sin corrupts cognition and how, correlatively, right living is crucial for the proper function of our cognitive faculties.  Virtue, as it turns out, is as important for the mind as the mind is for the life of virtue.