Abstract
The study attempts to survey the way in which the rationalist spirit (especially Aristotle’s philosophy) was assimilated by Christian thinking in the patristic and scholastic periods. This shows that the great schism is the outcome not only of dogmatic controversies, but also of accepting and promoting distinctive-argumentative methodologies to justify these dogmas. If in the West theory was viewed as contemplation and as method for conceptual construction, in the East the emphasis was laid exclusively on contemplation and revelation. Furthermore, the West accepted the autonomy of sciences by creating the “seven liberal arts” - an unacceptable concept for the Orthodox world, where logic was considered a mere organon, and philosophy, an ancilla theologiae. Among the main consequences detectable to this day are the varied cultural moulds that exist in the Christian world, as well as the scientific and civilizational lagging behind of the Orthodox East