Schopenhauer, a German philosopher of the early 19th century, is a greatly neglected thinker today, despite being hugely influential in the late 19th and early 20th centuries, most notably on the thought of Nietzsche, Wagner and Freud. The latter in particular, although he denied it, was greatly influenced by him. Janaway convincingly extends the list to include Mahler, Jung, Mann and others. In fact, if you have not yet delved deeply into the work of Freud or Nietzsche, I would strongly recommend that you tackle Schopenhauer before doing so, and Janaway's is the perfect introduction. It is a well-informed, readable and balanced account, neither an apology nor a savaging. Schopenhauer's metaphysics have not stood the test of time, but his worldview, essentially pessimistic yet with promise of redemption, is still very relevant, and in many ways strikingly modern. If you are at all interested in the development of modern thought, especially that of the various German and Austrian schools, then you need to acquaint yourself with Schopenhauer, and I doubt you will find a better introduction than this book.