My mentor was the best friend of Bruce Lee, he once told me something similar when I showed him my book collection on Bruce Lee. He told me that once you got what you need out of them, you should get rid of them. He then told me he had stacks of letters from bruce that he burned. then, about five years ago, in need of money, he compiled a book made up of whatever scraps he had left. We were out of contact for many years by then. But I thought he probably really regretted burning all that stuff. Philosophy is nice but I'd rather keep things that have touched me deeply. i still have tapes of 1999 and Bruce Springsteens' Darkness On the Edge Of Town, not because i need them, but because they changed my life. Sometimes I want to pick them up and feel them in my hands.