"The main assumption to be put forward ... is that the universe, U, if it is to be considered in the variety, the complexity, and, at the same time, the coherence known to us, can be understood and explained only if defined as a constructive universe. By 'constructive' I mean that variety and complexity can be obtained only by processes of manipulation and combination, operated on and by the initial, given U. These are understood to be processes increasing the levels of differentiation as well as resulting in the accumulation of structure; these two together with their linking factor, will be represented as subject to law."

Slots and Values
ref	292 of Salthe
source	Unnamed