No, it's not Quriltai. It's H.L. Mencken, who is quoted on Quriltai's blog.
"Well, I tell you, if I have been wrong in my agnosticism, when I die I'll walk up to God in a manly way and say, Sir, I made an honest mistake."
H. L. Mencken
Here's another good one, from the Wiki page. It's the epitaph from his tombstone:
"If, after I depart this vale, you ever remember me and have thought to please my ghost, forgive some sinner, and wink your eye at some homely girl."