Leibniz, or the Best of All Possible Worlds, 

At its most basic, philosophy is about learning how to think about the world around us. It should come as no surprise, then, that children make excellent philosophers Naturally inquisitive, pint-size scholars need little prompting before being willing to consider lifes big questions, however strange or impractical. Plato & Co. introduces children--and curious grown-ups--to the lives and work of famous philosophers, from Socrates to Descartes, Einstein, Marx, and Wittgenstein. Each book in the series features an engaging--and often funny--story that presents basic tenets of philosophical thought alongside vibrant color illustrations.