"Anyone who knows anything of history knows that great social changes are impossible without feminine upheaval. Social progress can be measured exactly by the social position of the fair sex, the ugly ones included."

"Art is always and everywhere the secret confession, and at the same time the immortal movement of its time. "

"Capital is dead labor, which, vampire-like, lives only by sucking living labor, and lives the more, the more labor it sucks. "

"Experience praises the most happy the one who made the most people happy. "

"For the bureaucrat, the world is a mere object to be manipulated by him."

"From each according to his abilities, to each according to his needs."

"History repeats itself, first as tragedy, second as farce."

"It is absolutely impossible to transcend the laws of nature. What can change in historically different circumstances is only the form in which these laws expose themselves."

"Medicine heals doubts as well as diseases."

"Reason has always existed, but not always in a reasonable form."