32. This consideration will serve also to satisfy some modern philosophers who go so far as to say that God is the only agent. It is true that God is the only one whose action is pure and without admixture of what is termed 'to suffer': but that does not preclude the creature's participation in actions, since _the action of the creature_ is a modification of the substance, flowing naturally from it and containing a variation not only in the perfections that God has communicated to the creature, but also in the limitations that the creature, being what it is, brings with it. Thus we see that there is an actual distinction between the substance and its modification or accidents, contrary to the opinion of some moderns and in particular of the late Duke of Buckingham, who spoke of that in a little _Discourse on Religion_ recently reprinted. Evil is therefore like darkness, and not only ignorance but also error and malice consist formally in a certain kind of privation. Here is an example of error which we have already employed. I see a tower which from a distance appears round although it is square. The thought that the tower is what it appears to be flows naturally from that which I see; and when I dwell on this thought it is an affirmation, it is a false judgement; but if I pursue the examination, if some reflexion causes me to perceive that appearances deceive me, lo and behold, I abandon my error. To abide in a certain place, or not to go further, not to espy some landmark, these are privations. 33. It is the same in respect of malice or ill will. The will tends towards good in general, it must strive after the perfection that befits us, and the supreme perfection is in God. All pleasures have within themselves some feeling of perfection. But when one is limited to the pleasures of the senses, or to other pleasures to the detriment of greater good, as of health, of virtue, of union with God, of felicity, it is in this privation of a further aspiration that the defect consists. In general perfection is positive, it is an absolute reality; defect is privative, it comes from limitation and tends towards new privations. This saying is therefore as true as it is ancient: _bonum ex causa integra, malum ex quolibet defectu_; as also that which states: _malum causam habet non efficientem, sed [143] deficientem_. And I hope that the meaning of these axioms will be better apprehended after what I have just said.