Thus much, as connected with our subject, will be sufficient on the difficult subject both of the freedom of the pure created spirits and also of man’s will, as regarded solely from its philosophical aspect, and without any reference to the moral theory, and solely in relation to the system of the universe. Difficult, however, is this subject, merely on one account. The logical illusion, from which springs all error, strife, and confusion, and which we are too apt to transfer to the divine mind, is so far innate in the very form of man’s finite intellect, than even when we have recognized it for what it really is; yet, so long as we confine ourselves to mere logical reasoning, and are seduced by its seeming rigor of consequence, we are ever ready to fall anew into this dangerous error without even remarking it. In the same way, now, that the existence of free beings follows naturally from the love of God, as the final cause of creation, so, on the other hand, the permission of moral evil is a mere result of that freedom in and through which these created beings have to run their appointed time. For this freedom, as considered with a reference to God and futurity, or to the immortality of the soul, is nothing else than the time of trial and the state of probation itself. But, perhaps it will be asked, “Why, then, does not God, by one nod of retributive justice, by one breath of His omnipotence, annihilate forever, as He so easily might, the whole company of evil and rebellious spirits, together with their leader, the Prince of this world, and so purify the whole visible creation, and release external nature from their desolating influence?” To this the answer is simple and at hand. Man is placed in this world on his trial and for a struggle with evil, and this warfare is not yet ended. But by such an annihilation of evil, the living development of nature would be precipitated in that course which God originally designed it to advance through, and cut short before the appointed time of final purification, when, according to His promise, He will, as Holy Writ expresses it, create new heavens and a new earth, and make perfect the whole creation.[33] Man is free, but utterly unripe as yet; and thoroughly incomplete also is nature, or the sensible world, and material creation; consequently, the immortality of the soul is the corner-stone and key for understanding the whole. For the mere beginning of creation is perfectly unintelligible so long as we do not take into consideration the other extreme or end--its final completion and ultimate consummation. Just as the half of human life on this side the grave can not be understood unless we contemplate, at the same time with it, its second half on the other side of the tomb, as its complement, and as a necessary element toward the elucidation of the whole.