"The ideas of the ruling class are in every epoch the ruling ideas, i.e. the class which is the ruling material force of society, is at the same time its ruling intellectual force."

"The proletarians have nothing to lose but their chains. They have a world to win. Workingmen of all countries, unite!"

"The meaning of history is the progress of humanity toward freedom and self-consciousness."

"The development of modern industry, therefore, cuts from under its feet the very foundation on which the bourgeoisie produces and appropriates products. What the bourgeoisie therefore produces, above …"

"The more the worker expends himself in work, the more powerful becomes the world of objects which he creates in face of himself, the poorer he himself becomes, the less world he has as his own."