Jekyll and Hyde by Mary Shelly Chapter 10 Page 14

Even at that time, I had not conquered my aversions to the dryness of a life of study. I would still be merrily disposed at times; and as my pleasures were (to say the least) undignified, and I was not only well known and highly considered, but growing towards the elderly man, this incoherency of my life was daily growing more unwelcome. It was on this side that my new power tempted me until I fell in slavery. I had but to drink the cup, to doff at once the body of the noted professor, and to assume, like a thick cloak, that of Edward Hyde. I smiled at the notion; it seemed to me at the time to be humourous; and I made my preparations with the most studious care.

I took and furnished that house in Soho, to which Hyde was tracked by the police; and engaged as a housekeeper a creature whom I knew well to be silent