Peter J. Carroll is a grown-up man who likes to talk about magic and how it works. Magic is not like the magic you see on TV, where people pull rabbits out of hats. It's something that people believe can change the world around them.
Peter J. Carroll thinks that there are different ways of doing magic. One way is to use words and symbols to create a spell. Another way is to use your mind to focus your thoughts and change the energy around you.
He also thinks that anyone can do magic if they learn how to do it properly. He has written books that explain how to do it and how to make it work.
Some people think that Peter J. Carroll's ideas are really cool and interesting. Others think that magic is not real and that his ideas are just silly.