All our inventions have endowed material forces with intellectual life, and degraded human life into a material force.

Medicine heals doubts as well as diseases.

In the various stages of development which the struggle of working class against the bourgeoisie has to pass through, they always and everywhere represent the interests of the movement as a whole.

English law in 1572 decreed that beggars above 14 years of age are to be severely flogged and branded on the left ear unless some one will take them into service for two years; in case of a repetition of the offense, if they are over 18, they are to be executed, unless some one will take them into service for two years; but for the third offence they are to be executed without mercy as felons.

We should not say that one man's hour is worth another man's hour, but rather that one man during an hour is worth just as much as another man during an hour. Time is everything, man is nothing: he is at the most time's carcass.

The monopoly of capital becomes a fetter upon the mode of production, which has sprung up and flourished along with, and under it. Centralisation of the means of production and socialisation of labour at last reach a point where they become incompatible with there capitalist integument. This integument is burst asunder. The knell of capitalist private property sounds. The expropriators are expropriated.

The philosophers have only interpreted the world, in various ways: the point, however, is to change it.