Confessions of an English Opium-Eater - Thomas De Quincey
I have often been asked how I first came to be a regular opium-eater, and have suffered, very unjustly, in the opinion of my acquaintance from being reputed to have brought upon myself all the sufferings which I shall have to record, by a long course of indulgence in this practice purely for the sake of creating an artificial state of pleasurable excitement. This, however, is a misrepresentation of my case. True it is that for nearly ten years I did occasionally take opium for the sake of the exquisite pleasure it gave me; but so long as I took it with this view I was effectually protected from all material bad consequences by the necessity of interposing long intervals between the several acts of indulgence, in order to renew the pleasurable sensations. It was not for the purpose of creating pleasure, but of mitigating pain in the severest degree, that I first began to use opium as an article of daily diet.