Reason consolidates itself in terms of techniques, e.g., hunting, fishing, farming,
handed down
by the tribe to the next generation, evolving still more in terms of greater and more
refined techniques and in terms of greater area of
human activity; it unifies itself through the compilation of
human experience not only in technique and art but in organized bodies of knowledge, the sciences, and all these achievements of reason resulting in a culture which in turn unify groups of people into cultural groups, civilizations, etc..