In their opinion, capitalist exploitation, capitalist competition, the individualist ideology of capitalist society, and so on, can all be found in ancient slave society, or even in primitive society, and will exist for ever unchanged. ... The fundamental cause of the development of a thing is not external but internal; it lies in the contradictoriness within the thing.

Mao Zedong, On Contradictions

"Productivity is the justification for your continued employment" -- takes credit for your work