As the State formerly played a most important part in the revolutions — Georges Sorel

"Lenin may be proud of what his comrades are doing; the Russian workers are acquiring immortal glory in attempting the realization of what hitherto had been only an abstract idea….."

"Mussolini is a man no less extraordinary than Lenin. He, too, is a political genius, of a greater reach than all the statesmen of the day, with the only exception of Lenin…"

"Engels feared that the Socialists, in order to gain adherents in the electoral struggles rapidly, would make promises which were contrary to Marxist doctrine. The antisemites told the peasants and the small shopkeepers that they would protect them from the development of capitalism. Engels thought that an imitation of this procedure would be dangerous, since, in his opinion, the could only be realised when capitalism had almost completely destroyed the small proprietors and small industries; if the Socialists, then, endeavoured to hinder this evolution, they would ultimately compromise their own cause."

"All the future of socialism resides in the autonomous development of workers’ ."

"Revolutionary keeps alive the desire to strike in the masses and only prospers when important strikes, accompanied by violence, take place."

"I have no reason to suppose that Lenin gained his ideas from my books; but if that were true, I should be not a little proud of having contribute to the intellectual development of a man who seems to me to be at once the greatest theoretician of socialism since Marx and a statesman whose genius recalls that of Peter the Great."