What is the original source and exact phrasing of the W. Pater Quote, "Burn always, with a hard gemlike flame"

Question

I'm keen to find the orignal source of the quote, and the exact original phrasing. There are a few variations out there, gemlike/gem-like, flame/fire are varied a lot.
Possibly it was translated from latin??
If that was the case I'd be keen to find the latin translation as well.
Thanks.

Answer 1

It comes from the "Conclusion" to Pater's "Studies in the History of the Renaissance." I think you have the quotation correctly. I will see if I can find the text online.

Here it is: "To burn always with this hard, gemlike flame, to maintain this ecstasy, is success in life."

page 236 of the edition I've linked to.

(The book went through menay editions, with slight variations in the title. The edition I've linked to is the 11th edition: THE RENAISSANCE: STUDIES IN ART AND POETRY
WALTER HORATIO PATER London: 1910. (The Library Edition.)