Numbers 24:16

He hath said, which heard the words of God, and knew the knowledge of the most High, [which] saw the vision of the Almighty, falling [into a trance], but having his eyes open:

Ver. 16. And knew the knowledge of the Most High.] The eye may be clear while the hand is palsied. Baalam's great knowledge was but intuitiva, standing in speculation; it was not directiva vitae: he knew but by hearsay, as a blind man knows colours; his light served but to light him into utter darkness. Neronis Quantus artifex pereo, quadrabit in te peritum, et periturum.