Revolutions are the locomotives of history.
Workers of the world unite; you have nothing to lose but your chains.
History repeats itself, first as tragedy, second as farce.
The rich will do anything for the poor but get off their backs.
The philosophers have only interpreted the world, in various ways. The point, however, is to change it.
From each according to his abilities, to each according to his needs.
Social progress can be measured by the social position of the female sex.
Religion is the sigh of the oppressed creature, the heart of a heartless world, and the soul of soulless conditions. It is the opium of the people.
The more the division of labor and the application of machinery extend, the more does competition extend among the workers, the more do their wages shrink together.
The history of all previous societies has been the history of class struggles.
Greek philosophy seems to have met with something with which a good tragedy is not supposed to meet, namely, a dull ending.
There is no royal road to science, and only those who do not dread the fatiguing climb of its steep paths have a chance of gaining its luminous summits.
Money is the alienated essence of man's labor and life; and this alien essence dominates him as he worships it.
Πηγαίνετε, βγείτε έξω. Τα τελευταία λόγια είναι για τους ανόητους που δεν έχουν πει αρκετά. (Τα τελευταία του λόγια)
Reason has always existed, but not always in a reasonable form.
“Go on, get out! Last words are for fools who haven't said enough!”(his last words)