Instinct relates to a particular concrete connection such as an individual fleeing from fire. Imagination takes materials supplied through sense memory and translates them into a particular image composed of characters derived from other images. The second type of knowledge, intellectual knowledge, is abstract and general. This knowledge is quite different from the concrete and particular of external and internal senses. The general ability to understand covers simple apprehension, judgment, and reasoning.
Simple apprehension is when the mind accepts an object without affirming or denying it.
The issue of judgment is the reality that two objects are in agreement or disagreement. Belief occurs through faith. A person may not be moved to accept an object as true, but by an act of will, he believes. Objects of belief deal with divine matters which exceed man's cognitive capabilities. A mistake occurs as a result of a judgment in the intellect.