Here it is. It's from Angel Season 4 - Deep Down
Angel: "What you did to me - was unbelievable, Connor. - But then I got stuck in a hell dimension by my girlfriend one time for a hundred years, so three months under the ocean actually gave me perspective. Kind of a M. C. Esher perspective - but I did get time to think. About us, about the world. - Nothing in the world is the way it ought to be. - It's harsh, and cruel. - But that's why there's us. Champions. It doesn't matter where we come from, what we've done or suffered, or even if we make a difference. We live as though the world was what it should be, to show it what it can be. - You're not a part of that yet. - I hope you will be. (Angel moves to stand in front of Connor) I love you, Connor. (Quietly, after a beat) Now get out of my house."