5 Man is distinguished above the animals through his reason. The tangible perceptions may be likened to this candle, the reasonable perceptions to the light. Calculations of mathematical problems and determining the spherical form of the earth are through the reasonable perceptions. The center of gravity is a hypothesis of reason. Reason itself is not tangible, perceptible to the senses.
Reason is an intellectual verity or reality.
All qualities are ideal realities, not tangible realities. For instance, we say this man is a scholarly man. Knowledge is an ideal attainment not perceptible to the senses. When you see this scholarly man, your eye does not see his knowledge, your ear cannot hear his science, nor can you sense it by taste. It is not a tangible verity.