The animal is one with its life activity. It does not distinguish the activity from itself. It is its activity. But man makes hislife activity itself an object of his will and consciousness. He has a conscious life activity. It is not a determination with which he is completely identified.
Karl MarxCapitalist agricultural production prevents the return to the soil of its elements consumed by man in the form of food and clothing; it therefore violates the conditions necessary to lasting fertility of the soil. By this action it destroys at the same time the health of the town labourer and the intellectual life of the rural labourer.
Karl Marx