What motion, therefore, is both universally and particularly, has been said; Since it is not in manifest how each of its species should be defined. For mutation according to quality, is the energy of that which may be so changed, so far as it possesses this capacity. Further, the energy of that which is effective and passive in capacity is more known so far as it is such; and that simply: and again, in particulars, building or healing period after the same manner, also, we may speak concerning each of the other motions.
