[39] for the coin of learning and instruction, which is synonymous with Jacob, is re-coined into the seeing Israel, in consequence of which he, the faculty of seeing, beholds the divine light, which is in no respect different from knowledge, which opens the eye of the soul, and leads it on to embrace the most conspicuous and manifest comprehension of existing things: [41] for as it is through music that the principles of music are understood, and through each separate art that its principles are comprehended, so also it is owing to wisdom that what is wise is contemplated: