2.

But, my very dear brother, you could not think that I could be offended by your reply, had you not thought that you were offended by what I had written. For I could never have entertained concerning you the idea that you had not felt yourself offended by me if you so framed your reply as to offend me in return. If, on the other hand, I have been supposed by you to be capable of such preposterous folly as to take offence when you had not written in such a way as to give me occasion, you have in this already wronged me, that you have entertained such an opinion of me. But surely you who are so cautious, that although you recognised my style in the letter of which you had a copy, you refused to believe its authenticity, would not without consideration believe me to be so different from what your experience has proved me to be. For if you had good reason for seeing that I might justly complain had you hastily concluded that a letter not written by me was mine, how much more reasonably may I complain if you form, without consideration, such an estimate of myself as is contradicted by your own experience! You would not therefore go so far astray in your judgment as to believe, when you had written nothing by which I could be offended, that I would nevertheless be so foolish as to be capable of being offended by such a reply.