He’s a spicy writer so there’s a lot but here’s vol 1 part 4 ch 15 section 9:

“We shall return again in Volume 3 to the fanatical opposition of the manufacturers to those clauses which imposed on them a slight expenditure on appliances for protecting the arms and legs of their ‘hands’. Here is yet another dazzling vindication of the free-trade dogma that, in a society of mutually antagonistic interests, each individual furthers the common welfare by seeking his own personal advantage!”

That’s btw from the Penguin version. I tried to show that to someone today but they had the Wordsworth version (publisher) or something like that and it was much much less spicy in that version/translation.

Would love to hear your favorite Marx zinger!