This may be the best front cover I’ve ever seen: it certainly tells the story of what the book is about, possibly even better than the book does itself. The question is: are there doors or is this all there is? Peter Kreeft, a notably clear philosopher, uses this slim book more as a meditation than an exposition, visiting many of the themes he has explored in his previous books – in particular, that beauty is not subjective but the clearest presence in this world of that which lies beyond it. In that sense, the book is not rigorous. As an argument, it will convince no one who does not already think this way. But as a sign… that it might. For, sometimes, people know, without being able to put into words, that there is more, that they are being sold a dud when told to limit themselves to the cares and concerns of this world. They sense it, from the corner of the eye, from intimations of things glimpsed and sensed and felt. This book is about some of these intimations. If you have felt them, then you will know there are doors in the walls of the world. But of course, the only way to know for sure is to pass through the final door, and face death’s blank denial, and see then whatever we see.