“Hashish is composed of a extraction of Indian hemp, butter, and a small quantity of opium. Take a clump the size of a nut, fill a small spoon, and happiness will be yours: absolute happiness with all its intoxication, its youthful folly, and its infinite blessedness. 

“As far as possible, you need a fine apartment or a beautiful scene, a free and unconcerned mind, and a few accomplices whose intellectual talents are similar to your own; and a little music if you can get it.

“Then the hallucinations begin. External objects take on a monstrous appearance. They show your senses forms heretofore unknown. Then they are deformed and finally enter into your being, or rather you enter into theirs. Sounds have colors, and colors have a music. Musical notes are numbers, and you perform mathematical calculations with terrifying speed as the music flows into your ears. You are seated and you have a smoke; you start to think that now you're inside the pipe, and it's you whom your pipe is smoking; you yourself are being exhaled in the form of bluish clouds.”

Charles Baudelaire, 1860