Introduction lecture for a Christian

Im sure this has been asked before but I'm looking for a good induction Ram Dass lecture for a Christian preacher. I'm at end of one thing and the beginning of another and it involves talking with my old Christian youth minister. I haven't necessarily told him about the psychedelics I got into, but I have told him I listen and read a lot of Ram Dass and want to find something that will introduce him to what he is all about with out necessarily saying, do psychedelics and get here. If that makes sense?