This conception of conflict between two opposite principles, Light and Darkness, Compression and Expansion, will be found to underlie all the ancient religions of the world, and it is conspicuous throughout our own Scriptures. But it should be borne in mind that the oppositeness of their nature does not necessarily mean conflict. The two principles of Expansion and Contraction are not necessarily destructive; on the contrary they are necessary correlatives to one another. Expansion alone cannot produce form; cohesion must also be present. It is the regulated balance between them that results in Creation. In the old legend, if I remember rightly, the conflict is ended by Tiamat marrying her former opponent. They were never really enemies, but there was a misunderstanding between them, or rather there was a misunderstanding on the part of Tiamat so long as she did not perceive the true character of the Spirit of Light, and that their relation to one another was that of co-operation and not of opposition. Thus also St. John tells us that "the light shineth in darkness and the darkness comprehended it not" (John i, 5). It is this want of comprehension that is at the root of all the trouble. The reader should note, however, that I am here speaking of that Primeval Substance, which necessarily has no light in itself, because there is as yet no vibration in it, for there can be no light without vibration. We must not make the mistake of supposing that Matter is evil in itself: it is our misconception of it that makes it the vehicle of evil; and we must distinguish between the darkness of Matter and moral darkness, though there is a spiritual correspondence between them. The true development of Man consists in the self-expansion of the Divine Spirit working through his mind, and thence upon his psychic and physical organisms, but this can only be by the individual's _willingness to receive_ that Spirit. Where the hindrance to this working is only caused by ignorance of the true relation between ourselves and the Divine Spirit, and the desire for truth is present, the True Light will in due course disperse the darkness. But on the other hand, if the hindrance is caused by _unwillingness_ to be led by the Divine Spirit, then the Light cannot be _forced_ upon any one, and for this reason Jesus said: "This is the condemnation, that light is come into the World, and men loved darkness rather than light, because their deeds were evil. For every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved. But he that doeth truth cometh to the light, that his deeds may be made manifest, that they are wrought in God" (John iii: 19-21). In physical science these things have an exact parallel in "Ohm's Law" regarding the resistance offered by the conductor to the flow of the electric current. The correspondence is very remarkable and will be found more fully explained in a later chapter. The Primary Darkness, both of