For if the soul is the animal or the living thing, or the soul of each individual is the individual itself, and being a circle is the circle, and being a right angle and the essence of the right angle is the right angle, then the whole in one sense must be called posterior to the part in one sense, ie to the parts included in the formula and to the parts of the individual right angle (for both the material right angle which is made of bronze, and that which is formed by individual lines, are posterior to their parts); while the immaterial right angle is posterior to the parts included in the formula, but prior to those included in the particular instance.