Best known for attempting to bring philosophy to the common man, William Durant was an avid advocate of equal wages, women's suffrage, and fairer working conditions. His first book, Philosophy and the Social Problem, explains why, at the time, philosophy had not been expanded. With sections on some of the most notable names in philosophy, Durant's first book paved the way to his Pulitzer Prize—won in tandem with his wife, Ariel Durant—as well as his place in history as one of the most popular authors on the subject.