Wait, don’t listen to it! Listen to the studio version first, it’s always cleaner.
About his philosophy: I’ve read his biography and the quotes that are found on the internet. There are bits and pieces of religious criticism and political commentary, but nothing really straight forwardly philosophical. He was interested in science more than anything (his biography was dedicated to Stephen Hawking, in fact). Of course you can glean philosophical meaning from some of his song lyrics once in a while, but nothing officially philosophical.