In the penultimate verse he makes known his discovery concerning the root of modern Nihilism and indifference,--i.

But there was also about him an indescribable air which no mechanic could have acquired in the practice of his handicraft however dishonestly exercised: the air common to men who live on the vices, the follies, or the baser fears of mankind; the air of moral nihilism common to keepers of gambling hells and disorderly houses; to private detectives and inquiry agents; to drink sellers and, I should say, to the sellers of invigorating electric belts and to the inventors of patent medicines.