The Seraphs love most, the Cherubs know most. Thomas Aquinas, Summa Theologica , I Quaest. CVIII 5, says, in substance, that the Seraphim are so called from burning; according to the three properties of fire, namely, continual motion upward, excess of heat, and of light. And again, in the same article, that Cherubim, being interpreted, is plenitude of knowledge, which in them is fourfold; namely, perfect vision of God, full reception of divine light, contemplation of beauty in the order of things, and copious effusion of the divine cognition upon others. ↩