Now, when has horror ever excluded study? Since when has malady banished medicine? Can one imagine a naturalist refusing to study the viper, the bat, the scorpion, the centipede, the tarantula, and one who would cast them back into their darkness, saying: “Oh! how ugly that is!” The thinker who should turn aside from slang would resemble a surgeon who should avert his face from an ulcer or a wart. He would be like a philologist refusing to examine a fact in language, a philosopher hesitating to scrutinize a fact in humanity. For, it must be stated to those who are ignorant of the case, that argot is both a literary phenomenon and a social result. What is slang, properly speaking? It is the language of wretchedness.