Answered in example sentence
That he thought this would not be entire parting us, but we might love as friends all our days, and perhaps with more satisfaction than we should in the station we were now in, as things might happen; that he durst say, I could not apprehend anything from him as to betraying a secret, which could not but be the destruction of us both, if it came out; that he had but one question to ask of me that could lie in the way of it, and if that question was answered in the negative, he could not but think still it was the only step I could take.