An interesting insight into the various spiritual dilemmas that plagued a Roman Emperor. A lot of topics are repeated throughout the book, just phrased differently, which can be a bit annoying but you just have to consider that the Meditations were never intended to be read by anyone else and these were problems which must have been constantly going through the Emperor's head throughout his life.
How small we as individuals are in the grand scheme of the Universe, how death is nothing to be feared and how best to be a good person tend to be some of the problems he tries to deal with. It's written beautifully and the meditations vary in size from short sentences to long paragraphs. A must-read if you're interested in classic philosophy.