Forum:Jack introspective talk

Please anyone I'm in big need of help. I've wanted to know exactly what episode is when Jack is talking to someone about how he learned he had to stay unattached from other people. Those are as I recall sort of the words he used but I might be wrong. I really need this and I have tried by looking for scripts and watching many episodes but I haven't been able to find it. Do you have any idea what episode it might be?