9. VII. The sun of the natural world is pure fire; and the world of nature first existed and continually subsists by means of this sun

That nature and its world - by which we mean the atmospheres and the earths which are called planets, among which is the terraqueous globe on which we dwell, together with all the productions, in general and in particular, which annually adorn its surface subsist solely from the sun, which constitutes their centre, and which, by the rays of its light and the modifications of its heat, is everywhere present, everyone knows for certain, from his own experience, from the testimony of the senses, and from the writings which treat of the way in which the world has been peopled. As, therefore, perpetual subsistence is from this source, reason may also conclude with certainty that existence is likewise from the same; for perpetually to subsist is perpetually to exist as a thing first existed. Hence it follows that the natural world was created by Jehovah God by means of this sun as a secondary cause.

[2] That there are spiritual things and natural things, entirely distinct from each other, and that the origin and support of spiritual things are from a sun which is pure love, in the midst of which is Jehovah God, the Creator and Upholder of the universe, has been demonstrated before; but that the origin and support of natural things are a sun which is pure fire, and that the latter is derived from the former, and both from God, follows of itself, as what is posterior follows from what is prior, and what is prior from The First.

[3] That the sun of nature and its worlds is pure fire, all its effects demonstrate: as the concentration of its rays into a focus by the art of optics, from which proceeds violently burning fire and also flame; the nature of its heat, which is similar to heat from elementary fire; the graduation of that heat according to its angle of incidence, whence proceed the varieties of climate, and also the four seasons of the year; besides many other facts, from which the rational faculty, by means of the senses of the body, may confirm the truth that the sun of the natural world is mere fire, and also that it is fire in its utmost purity.

[4] Those who know nothing concerning the origin of spiritual things from their own sun, but are only acquainted with the origin of natural things from theirs, can scarcely avoid confounding spiritual and natural things together, and concluding, through the fallacies of the senses and of the rational faculty derived from them, that spiritual things are nothing but pure natural things, and that from the activity of these latter, excited by heat and light, arise wisdom and love. These persons, since they see nothing else with their eyes, and smell nothing else with their nostrils, and breathe nothing else through their lungs but nature, ascribe to it all things rational also; and thus they imbibe what is natural as a sponge sucks up water. Such persons may be compared to charioteers who yoke the team of horses behind the carriage, and not before it.

[5] The case is otherwise with those who distinguish between things spiritual and natural, and deduce the latter from the former. These also perceive the influx of the soul into the body; they perceive that it is spiritual, and that natural things, which are those of the body, serve the soul for vehicles and mediums, by which to produce its effects in the natural world. If you conclude otherwise you may be likened to a crayfish, which assists its progress in walking with its tail, and draws its eyes backward at every step; and your rational sight may be compared to the sight of the eyes of Argus in the back of his head, when those in his forehead were asleep. Such persons also believe themselves to be Arguses in reasoning; for they say, 'Who does not see that the origin of the universe is from nature? And what then is God but the inmost extension of nature?' and make similar irrational observations, of which they boast more than wise men do of their rational sentiments.

7. V. Both that heat and that light flow into man: the heat into his will, where it produces the good of love; and the light into his understanding, where it produces the truth of wisdom.

It is well known that all things universally have relation to good and truth, and that there is not a single thing in existence in which there is not something related to those two. On this account there are two receptacles of life in man: one, which is the receptacle of good, called the will; and another, which is the receptacle of truth, called the understanding; and, as good is of love and truth is of wisdom, the will is the receptacle of love, and the understanding the receptacle of wisdom. Good is of love, because what a man loves that he wills, and when he brings it into action he calls it good: and truth is of wisdom, because all wisdom is from truths; indeed, the good which a wise man thinks is truth, which becomes good when he wills and does it.

[2] He who does not rightly distinguish between these two receptacles of life, which are the will and the understanding, and does not form for himself a clear notion respecting them, strives in vain to comprehend the nature of spiritual influx. For there is influx into the will, and there is influx into the understanding. Into the will of man there is an influx of the good of love, and into his understanding there is an influx of the truth of wisdom, each proceeding from Jehovah God, directly through the sun in the midst of which He is, and indirectly through the angelic heaven. These two receptacles, the will and the understanding are as distinct as heat and light; for, as was said above, the will receives the heat of heaven, which in its essence is love, and the understanding receives the light of heaven, which in its essence is wisdom.

[3] There is an influx from the human mind into the speech, and there is an influx into the actions; the influx into speech is from the will through the understanding, but the influx into the actions is from the understanding through the will. Those who are only acquainted with the influx into the understanding, and not at the same time with that into the will, and who reason and conclude therefrom, are like one-eyed persons, who only see the objects on one side of them, and not at the same time those on the other; and like maimed persons, who do their work awkwardly with one hand only; and like lame persons, who walk by hopping on one foot, with the assistance of a staff. From these few observations it is plain that spiritual heat flows into the will of man, and produces the good of love, and that spiritual light flows into his understanding, and produces the truth of wisdom.