"Men, in their struggle with Nature (i.e. in their struggle for freedom) enter into certain relations with each other to win that freedom… But men cannot change Nature without changing themselves. The full understanding of this mutual interpenetration of reflexive movement of men and Nature, mediated by the necessary and developing relations known as society, is the recognition of necessity, not only in Nature but in ourselves and therefore society. Viewed objectively this active subject-object relation is science, viewed subjectively it is art; but as consciousness emerging in active union with practice it is simply concrete living - the whole process of working, feeling, thinking and behaving like a human individual in one world of individuals and Nature."
— Christopher Caudwell, 1937