What does dr. jekyll’s letter the reader understand about him? "dear lanyon,—you are one of my oldest friends; and although we may have differed at times on scientific questions, i cannot remember, at least on my side, any break in our affection. there was never a day when, if you had said to me, 'jekyll, my life, my honour, my reason, depend upon you,' i would not have sacrificed my left hand to you. lanyon my life, my honour, my reason, are all at your mercy; if you fail me to-night, i am lost. you might suppose, after this preface, that i am going to ask you for something dishonourable to grant. judge for yourself."