Lives and works of great thinkers from Jonathan Edwards to Albert Einstein, from Wiliam Penn, escaping English tyranny, to Paul tillich, fleeing German despotism.

The number of technical terms employed by existentialist philosophy must be precisely defined in order that the intended thought may be properly understood. This book is designed to present such definitions based on documentary source materials by the major existentialists, such as Kierkegaard, Nietzsche, Sartre, Jaspers, Marcel, Heidegger, Camus and Berdysev.