I knew myself, at the first breath of this new life, to be more wicked, tenfold more wicked, sold a slave to my original evil; and the thought, in that moment, braced and delighted me like wine. I stretched out my hands, exulting in the freshness of these sensations; and in the act, I was suddenly aware that I had lost in stature.
There was no mirror, at that date, in my room; that which stands beside me as I write, was brought there later on and for the very purpose of these transformations.
The night, however, was far gone into the morning—the morning, black as it was, was nearly ripe for the conception of the day—the inmates of my house were locked in the most rigorous hours of slumber; and I determined, flushed as I was with hope and triumph, to venture in my new shape as far as to my bedroom.
I crossed the yard, wherein the constellations looked down upon me, I could have thought, with wonder, the first creature of that sort that their unsleeping vigilance had yet disclosed to them; I stole through the corridors, a stranger in my own house; and coming to my room, I saw for the first time the appearance of Edward Hyde.
I must here speak by theory alone, saying not that which I know, but that which I suppose to be most probable. The evil side of my nature, to which I had now transferred the stamping efficacy, was less robust and less developed than the good which I had just deposed. Again, in the course of my life, which had been, after all, nine tenths a life of effort, virtue and control, it had been much less exercised and much less exhausted. And hence, as I think, it came about that Edward Hyde was so much smaller, slighter and younger than Henry Jekyll.