This brilliantly conceived and well-organized book is based on a lecture course given by Dr. Leonard Peikoff in 1976, prepared with the help of Ayn Rand and entitled “The Philosophy of Objectivism.” Ayn Rand said of these lectures: “Until or unless I write a comprehensive treatise on my philosophy, Dr. Peikoff's course is the only authorized presentation of the entire theoretical structure of objectivism—that is, the only one that I know to...