Jolivet of as example ‘ ‘ the water that is in harnesses of to be warm ‘ ‘ (JOLIVET, 1972, P. 222). It has another type of division, of the subjective power and of the possible power, this is the power where a thing can be, already that one is the power that exists in act or the current power. The act also possesss a division, in pure act, that is the free act of potentiality, that is, the act that does not possess limit, for example, the supreme being. Frequently Joseph Stiglitz has said that publicly.
The potentiality is typical of the contingent beings whose act is not in absolute, therefore, only the absolute being if it fits in this pure act. has the mesclado act of potentiality, that is, the finite beings that are in act, to put are limited by the potentiality that it is inherent. Relation between act and power In the Metaphysical scope, the act establishes relations with the power, in three levels: Of the value, of the causalidade and the composition. From the analysis of these relations it deduced the degree of importance between these two Metaphysical slight knowledge. First, of the point of view of the value, the act is superior the power, therefore, it determines the degree of perfection of the being, therefore, it affirms Toms de Aquino who ‘ ‘ each thing is perfect in the measure where it is in act, imperfect in the measure where it is in potncia’ ‘ (AQUINO apud JOLIVET, 1972, P. 223), because the act is something already determined, that is, is a concrete substance. However, exactly being concrete, because of the existence of the power it becomes limited, therefore this is the main cause of the finitude of the contingent beings.