4410. It has become evident to me from much experience that the sight of the left eye corresponds to truths which are of the understanding, and the right eye to affections of truth, which are also of the understanding; and consequently that the left eye corresponds to the truths of faith, and the right eye to the goods of faith. The reason why there is such a correspondence is that in the light which is from the Lord there is not only light, but also heat, the light itself being the truth which proceeds from the Lord, and the heat being the good. It is from this, and also from the influx into the two hemispheres of the brain, that there exists such a correspondence; for those who are in good are on the Lord's right hand, and those who are in truth are on His left hand.