Today… the whole historic dynamic has placed philosophy in the center of social actuality, and social actuality in the center of philosophy…. By criticism, we mean that intellectual, and eventually practical, effort which is not satisfied to accept the prevailing ideas, actions, and social conditions unthinkingly and from mere habit; effort which aims to coordinate the individual sides of social life with each other and with the general ideas and aims of the epoch, to deduce them genetically, to distinguish the appearance from the essence, to examine the foundations of things, in short, really to know them.1.