This treatise analyses the archaeological remains of Stonehenge. The method of construction used in Stonehenge enables us to reconstruct precisely the major intention of the original project - beyond the limits of verbal expression and written tradition. The Circle of Stonehenge was designed 3100 B.C to expose a system of order in accordance with number. It demonstrates the knowledge of the Euclidean geometry as well as the geometrical deduction of the series of numbers in harmonic correspondence with astronomical alignments. Thus the architect of Stonehenge established a model of axiomatic demonstration. Its cosmological layout accomplished the condition of the possibility of exact science and thereby introduced the steadfast basic knowledge of science and high culture. Study of the sciences embodied in Stonehenge remained for 5000 years the propaedeutics of the Liberal Arts in order to enable critical cognition.