Reason has always existed, but not always in a reasonable form.
The unity of the bourgeoisie can be shaken only by the unity of the proletariat.
All science would be superfluous if the outward appearance and the essence of things directly coincided.
Social progress can be measured exactly by the social position of the fair sex.
Do not be deluded by the abstract word Freedom. Whose freedom? Not the freedom of one individual in relation to another, but freedom of Capital to crush the worker.
I am greatly pleased with the public, authentic isolation in which we two, you and I, now find ourselves. It is wholly in accord with our attitude and our principles.