Although gold and silver are not by nature money, money is by nature gold and silver.

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.

When the train of history hits a curve, the intellectuals fall off.

Nothing is more tedious than the dreaming platitude.

I am stretching out this volume, since those German dogs estimate the value of books by their cubic contents.

In proportion as the bourgeoisie, i.e., capital, is developed, in the same proportion is the proletariat, the modern working class, developed - a class of labourers, who live only so long as they find work, and who find work only so long as their labour increases capital. These labourers, who must sell themselves piecemeal, are a commodity, like every other article of commerce, and are consequently exposed to all the vicissitudes of competition, to all the fluctuations of the market.

Music is the mirror of reality.