Reading and Re-Reading Great Works

There are a number of books that I have decided I need to periodically re-read throughout my life, both to improve my understanding of them, the world, and my place in it. Some I would recommend to everyone and believe that there is hardly anyone who would not be the better for reading them; others I am willing to acknowledge are just a matter of taste and preference. The former include, of course Italian poet Dante Alighieri's Divine Comedy, Machiavelli's The Prince, and Homer's Odyssey. Ones I need to re-read and which I think most people would benefit from but which do not think necessarily need to be re-read periodically include Homer's Iliad and Sun Tsu's Art of War (which should also be kept as a reference).