"Society can no longer exist as a community of free and equal individuals, but only as a mass of isolated, mutually hostile atoms, each striving to exploit the others."

"The proletariat has nothing to lose but its chains. It has a world to win. Working men of all countries, unite!"

"The modern individual family is founded on the open or concealed domestic slavery of the wife."

"The more a science advances, the more it is divided into separate branches, and the more these branches, in turn, are further subdivided."

"All that is solid melts into air, all that is holy is profaned, and man is at last compelled to face with sober senses his real conditions of life, and his relations with his kind."