" The world is to be comprehended not as a complex of ready-made things but as a complex of processes, in which apparently stable things no less than the concepts, their mental reflections in our heads, go through an uninterrupted change of coming in to being and passing away, in which, through all the seeming contingency and in spite of all temporary retrogression, a progressive development finally asserts itself. "

― Friedrich Engels , Ludwig Feuerbach and the Outcome of Classical German Philosophy