The business of this book is to elucidate the connection between "goodness, value and worth" on the one hand and "life, being and existence" on the other. This may seem like an abstruse academic project, but I believe it to be of great practical importance. I think that a careful consideration of this topic results in a clear vision of what it means to be a living human being; how we ought to live our lives, and so be happy; and what fulfilment we can reasonably hope for. In the first part of this book (Chapters One to Nine) I argue that mortal existence can only be rationally accounted for...