The deepest of worldly emotions in this period [the Middle Ages] is the love of man for man, the mutual love of warriors who die together fighting against odds, and the affection between vassal and lord. We shall never understand this last, if we think of it in the light of our own moderated and impersonal loyalties. We must not think of officers drinking the king’s health: we must think rather of a small boy’s feeling for some hero in the sixth form. There is no harm in the analogy, for the good vassal is to the good citizen very much as a boy is to a man. He cannot rise to the great abstraction of a res publica. He loves and reverences only what he can touch and see; but he loves it with an intensity which our tradition is loath to allow except to sexual love.
Lewis, C. S. The Allegory of Love (eBook Original) (Kindle Locations 202-207). HarperCollins. Kindle Edition.