More importantly, the Orthodox see the Filioque as just the tip of the iceberg and really just a symptom of a much more deeply rooted problem of theology, one so deeply rooted that they consider it to be heretical and even, by some characterizations, an inability to "see God" and know God. This heresy is allegedly rooted in Frankish paganism, Arianism, Platonist and Aristotelian philosophy and Thomist rational and objective Scholasticism. In opposition to what they characterize as pagan, heretical and "godless" foundations, the Orthodox rely on intuitive and mystical knowledge and vision of God ("theoria") based on hesychasm and noesis. Catholics accept as valid the Eastern Orthodox intuitive and mystical understanding of God and consider it complementary to the rational Western reflection.