Read it through once

“If it was a light answer,” returned Darnay, “I beg your forgiveness for it. I had no other object than to turn a slight thing, which, to my surprise, seems to trouble you too much, aside. I declare to you, on the faith of a gentleman, that I have long dismissed it from my mind. Good Heaven, what was there to dismiss! Have I had nothing more important to remember, in the great service you rendered me that day?”