Say 'philosopher,' and someone grand, old and bearded might come to mind. But, as philosophy professor Scott Hershovitz shows in this debut, some of the best philosophers in the world are better described as nasty, brutish and short - that is to say, they're children. Children make wonderful philosophers because they constantly question things that grown-ups take for granted, test theories about the people around them, and try to work out the way the world works. Following the lead of his two young sons, Rex and Hank, Hershovitz takes us on a unique tour through classical and contemporary philosophy, steered by questions like, does Hank have the right to drink Fanta? When is it okay to swear? And, does the number six exist?