Would I be able to quote it? No. It's in a conversation between Stephen and his friend as they walk around Dublin, and the book describes exactly which streets they walk down and where they turn and whose yard they pass while they're having the conversation. I remember one specific snippet: Stephen asks if lightning strikes a block of wood (stump, maybe?) and blasts it into a specific shape (a cow, maybe?), is that art?

I mean, there was a scene or two in Portrait that I responded to, too. But mainly, it was a protagonist I didn't care about, doing things I didn't care about, with other people I didn't care about, in places I didn't care about. So "no response whatsoever" is a pretty fair summary of my reaction.