"Indessen ist das gerade wieder der Vorzug der neuen Richtung, daß wir nicht dogmatisch die Welt antizipieren, sondern erst aus der Kritik der alten Welt die neue finden wollen. ... Ist die Konstruktion der Zukunft und das Fertigwerden für alle Zeiten nicht unsere Sache, so ist desto gewisser, was wir gegenwärtig zu vollbringen haben, ich meine die rücksichtslose Kritik alles Bestehenden, rücksichtslos sowohl in dem Sinne, daß die Kritik sich nicht vor ihren Resultaten fürchtet und ebensowenig vor dem Konflikte mit den vorhandenen Mächten."

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

"It is a bad thing to perform menial duties even for the sake of freedom; to fight with pinpricks, instead of with clubs. I have become tired of hypocrisy, stupidity, gross arbitrariness, and of our bowing and scraping, dodging, and hair-splitting over words. Consequently, the government has given me back my freedom."

"“And your education! Is not that also social, and determined by the social conditions under which you educate, by the intervention, direct or indirect, of society, by means of schools, etc.? The Communists have not invented the intervention of society in education; they do but seek to alter the character of that intervention, and to rescue education from the influence of the ruling class.”"

"The executive of the modern State is but a committee for managing the common affairs of the whole bourgeoisie."

"The history of all hitherto existing societies is the history of class struggles."

"With disdain I will throw my gauntlet"