"History repeats itself, first as tragedy, second as farce."
— Karl Marx

"“I’ll put off reading Lolita for six more years until she turns 18.” "
— Groucho Marx

"The world would not be in such a snarl, had Marx been Groucho instead of Karl."
— Irving Berlin

"I wasn't kissing her. I was whispering in her mouth."
— Chico Marx

"If there were no Frenchwomen, life wouldn't be worth living."
— Friedrich Engels (Collected Works 38 1844-51)

""Last words are for those fools who believe they have not yet said enough..."(the last words of Karl Marx)"
— Karl Marx

"It is possible to argue that the really influential book is not that which converts ten millions of casual readers, but rather that which converts the very few who, at any given moment, succeed in seizing power. Marx and Sorel have been influential in the modern world, not so much because they were best-sellers (Sorel in particular was not at all a widely read author), but because among their few readers were two men, called respectively Lenin and Mussolini."
— Aldous Huxley

"I can see it now. You standing by the stove, I can see you but not the stove."
— Groucho Marx in a Marx Brothers' Film

"Time flies like an arrow. Fruit flies like a banana. "
— Groucho Marx

"Here's your first problem," he said, pointing at a sentence. "'Religion is the opium of the people.' Well, I don't know about people, but I think you'll find that the opium of pirates is actual opium."
— Gideon Defoe (The Pirates! In an Adventure with Communists: A Novel)

"Being doped is a pleasure you pay for. There was always opium there for the people -- in the end it tainted their whole faith. If the Church had not always stood so watchfully behind the ruling powers, there would not have been such attacks against everything it stood for -- although of course it may have been competing with them for the first place among the rulers, as in the Middle Ages. Whenever it was a question of keeping the serfs, and then the paid slaves down, the dope-dealers came unfailingly to the help of the oppressors."
— Ernst Bloch