Bede

The light of the eyes rejoices the soul, etc. It rightly delights the human mind, when it recognizes, by the Lord's revelation, that it has perceived the light of heavenly mysteries. Which another translation more clearly says, The eye seeing good things delights the heart, certainly the good things of the Lord in the land of the living. Whoever contemplates these with the eye of the mind, rightly delights in the heart, though externally he seems to walk sadly, oppressed by an enemy. …

Commentary on Proverbs ↗