An enjoyable little book what shares the wisdom of some of the greatest Minds to walk the earth: Plato, Socrates, Pythagoras, Aristotle, Confucius, Lao-Tzu and many others. I know that some of those mentioned on the previous list are not of Greek heritage; however, the author has also included an appendix which also references Buddhist, Taoist, and Muslim sources.
The wisdom comes in the form of aphorisms and they are separated in to topics such as money, children, mind & matter, etc. A nice, physically small book that can be kept handy for when one needs some timeless words of inspiration.