There's a Bradbury quote that I've seen repeatedly in recent years, always (in my encounters) without a location cited. I'm sure someone on this service can help. It begins:
"The universe is thronged with fire and light,/ And we but smaller stars, which, skinned, trapped and kept/Enshrined --"
I'm sure this is a true newbie query, but I'd be glad to hear some details.
Cullie

You could try skimming "Complete Poems," I guess, keeping in mind they are far from being actually complete.