Bικιπαίδεια s.v. trivium: Στα μεσαιωνικά πανεπιστήμια το trivium συνετίθετο από τρία αντικείμενα μελέτης: τη γραμματική, τη λογική και τη ρητορική. Η λέξη είναι Λατινική και σημαίνει «οι τρεις δρόμοι», αυτοί που σχηματίζουν το θεμέλιο της μεσαιωνικής κλασικής εκπαίδευσης.
Wikipedia s.v. quadrivium: In liberal arts education, the quadrivium (plural: quadrivia) consists of the four subjects or arts (namely arithmetic, geometry, music, and astronomy), taught after teaching the trivium. The word is Latin, meaning four ways, and its use for the four subjects has been attributed to Boethius or Cassiodorus in the 6th century. Together, the trivium and the quadrivium comprised the seven liberal arts (based on thinking skills), as distinguished from the practical arts (such as medicine and architecture).
For most medieval scholars, who believed that God created the universe according to geometric and harmonic principles, science – particularly geometry and astronomy – was linked directly to the divine. To seek these principles, therefore, would be to seek God.
The quadrivium consisted of arithmetic, geometry, music, and astronomy. These followed the preparatory work of the trivium, consisting of grammar, logic, and rhetoric.