7. What and how much can be seen in the soul? Since we have found in the soul both being and life, and as both being and life are what is common in every soul, and as life resides in intelligence, recognizing that there is (besides the soul and her being) intelligence and its life, we shall posit as a genus what is common in all life; namely, movement; consequently, being and movement, which constitute primary life, will be our first two categories. Although (in reality) they fuse, they are distinguished by thought, which is incapable of approaching unity exclusively; and whose exercise compels this distinction. Besides, it is possible, you can, in other objects, clearly see essence, as distinct from movement or life, although their essence be not real, and only shadowy or figurative.[306] Just as the image of a man lacks several things, and, among others, the most important, life; likewise, the essence of sense-objects is only an adumbration of the veritable essence, lacking as it does the highest degree of essence, namely, vitality, which appears in its archetype. So you see it is quite easy to distinguish, on one hand, essence from life, and, on the other, life from essence. Essence is a genus, and contains several species; now movement must not be subsumed under essence, nor be posited within essence, but should be equated with essence. When we locate movement within essence, it is not that we consider life is the subject of movement, but because movement is life's actualization; only in thought can either exist separately. These two natures, therefore, form but a single one; for essence exists not in potentiality, but in actualization; and if we conceive of these two genera as separated from each other it will still be seen that movement is within essence, and essence within movement. In the unity of essence, the two elements, when considered separately, imply each other reciprocally; but thought affirms their duality, and shows that each of the two series is a double unity. ANOTHER GENUS IS STABILITY, WHICH IS ONLY ANOTHER KIND OF MOVEMENT. Since then it is in the sphere of essence that movement appears, and since movement manifests its perfection far rather than it divides its being; and since essence, in order to carry out the nature here assigned to it, must always persevere in movement, it would be still more absurd to deny it stability, than to refuse it movement. The notion and the conception of stability are still more in harmony with the nature of essence than are those of movement; for it is in essence that may be found what is called "remaining in the same state," "existing in the same manner," and "being uniform." Let us therefore assert that stability is a genus different from movement, of which it seems to be the opposite. DISTINCTION BETWEEN STABILITY AND ESSENCE.