Shakespeare: The most influential person who ever lived

Stephen Marche believes William Shakespeare is the most influential man in history, showing up in the most obvious - and unexpected - places.

In a recent excerpt from his book, How Shakespeare Changed Everything, published in the National Post, Marche writes, "The effects of his words on the world have been out of all proportion, monstrous and sublime, vertiginous in their consequences, far beyond anything he could have predicted."

How Shakespeare Changed Everything is published by HarperCollins Publishers Ltd. © 2011 by Stephen Marche.