Imagine that Plato came to life in the twenty-first century and set out on a multicity speaking tour: How would he handle a host on Fox News who challenges him on religion and morality? How would he mediate a debate on the best way to raise a child between a Freudian psychoanalyst and a Tiger Mom? How would he answer a neuroscientist who, about to scan Plato's brain, argues that all his philosophical problems can be solved by our new technologies? What would he make of Google, and the idea that knowledge can be crowdsourced rather than reasoned out by experts? With a philosopher's depth and a novelist's imagination, Rebecca Newberger Goldstein probes the deepest issues confronting us - from sexuality and child-rearing to morality and the meaning of life - by allowing us to eavesdrop on Plato as he encounters the modern world. By reviving the Platonic art of the dialogue for the tweny-first century, she demonstrates that the questions he first posed continue to confound and enlarge us.