"You made me confess the fears that I have, But I will tell you also what I do not fear. I do not fear to be alone or to be spurned for another or to leave whatever I have to leave. And I am not afraid to make a mistake, even a great mistake, a lifelong mistake, and perhaps as long as eternity too."
Throughout the book we see Stephen criticizing himself over every minute detail: women, social life, actions, religion, etc. We see him constantly punishing himself because he felt that everything he did was somehow bad and he needed to repent. However, I think that it is in this moment that Stephen finally realizes that it is okay to make mistakes and learn from those mistakes instead of struggling with himself over them. I think that while Stephen's epiphany at the end of chapter 4 is significant to his coming of age, I would also argue that this passage (and the ones surrounding it) were as, or maybe even more, significant. He has finally come into acceptance that all of the mistakes he had made in his past were not all pointless and that he gained valuable knowledge and experience from them. I think that he no longer regrets any of the previous choices he had made. This quote just further proves the point that Stephen in no longer scared to dedicate his life to the arts, even if it's a mistake he will have to live with for the rest of his life. He has personally discovered what he wants to do and there isn't anything, not even his fears, that will stand in his way. This includes sacrificing his friendships and going against his mother's wishes. In this quote I feel that not only has he firmly persuaded the people around him that he wants to become an artist, but he has finally officially convinced himself that this is the right thing to do. Instead of doing what people think would be the right thing to do, like becoming a priest, Stephen has decided that even if he has to be alone while doing it, he wants to follow his heart by dedicating himself to the arts. He is willing to leave everything behind for it, especially his home country, and I think that this is an enormous step in the novel about coming of age.