The illusive intellect is make-believe. It manifests things that are imagined or pretended and tries to make them real and true. It is driven by crooked intelligence and travels in many winding pathways in search of image rather than reality and imitation rather than original.
The illuminating intellect stays in the company of Truth, and is guided by wisdom. This allows the light of true knowledge to shine through the darkness of ignorance, giving it the ability to discern real from unreal, truth from falsehood, and right from wrong.