Here was a panacea for all human woes; here was the secret of happiness, about which philosophers had disputed for so many ages, at once discovered; happiness might now be bought for a penny, and carried in the waistcoat pocket; portable ecstasies might be had corked up in a pint bottle; and peace of mind could be sent down in gallons by the mail-coach. But, if I talk in this way, the reader will think I am laughing; and I can assure him, that nobody will laugh long who deals much with opium; its pleasures even are of a grave and solemn complexion; and, in his happiest state, the opium-eater cannot present himself in the character of L'Allegro; even then, he speaks and thinks as becomes Il Penseroso. Nevertheless, I have a very reprehensible way of jesting, at times, in the midst of my own misery; and, unless when I am checked by some more powerful feelings, I am afraid I shall be guilty of this indecent practice, even in these annals of suffering or enjoyment. The reader must allow a little to my infirm nature in this respect; and with a few indulgences of that sort, I shall endeavour to be as grave, if not drowsy, as fits a theme like opium, so anti-mercurial as it really is, and so drowsy as it is falsely reputed.