It is barely possible that the minds of the present generations are not quite ripe for the reception of Occult truths. Such perchance will be the retrospect furnished to the advanced thinkers of the Sixth Root‐Race of the history of the acceptance of Esoteric Philosophy—fully and unconditionally. Meanwhile the generations of our Fifth Race will continue to be led away by prejudice and preconceptions. Occult Sciences will have the finger of scorn pointed at them from every street‐corner, and everyone will seek to ridicule and crush them in the name, and for the greater glory, of Materialism and its so‐called Science. The present Volumes, however, show, in an anticipatory answer to several of the forthcoming Scientific objections, the true and mutual positions of the defendant and plaintiff. The Theosophists and Occultists stand arraigned by public opinion, which still holds high the banner of the inductive Sciences. The latter have, then, to be examined; and it must be shown how far their achievements and discoveries in the realm of natural law are opposed, not so much to our claims, as to facts in nature. The hour has now struck to ascertain whether the walls of the modern Jericho are so impregnable, that no blast of the Occult trumpet is ever likely to make them crumble. The so‐called “Forces,” with Light and Electricity heading them, and the constitution of the Solar orb must be carefully examined; as also Gravitation and the Nebular theories. The natures of Ether and of other Elements must be discussed; thus contrasting Scientific with Occult teachings, while revealing some of the hitherto secret tenets of the latter. Some fifteen years ago, the writer was the first to repeat, after the Kabalists, the wise Commandments in the Esoteric Catechism. Close thy mouth, lest thou shouldst speak of _this_ [the mystery], and thy heart, lest thou shouldst think aloud; and if thy heart has escaped thee, bring it back to its place, for such is the object of our alliance.(452) And again, from the _Rules of Initiation_. _This is a secret which gives death: close thy mouth lest thou shouldst reveal it to the vulgar; compress thy brain lest something should escape from it and fall outside._ A few years later, a corner of the Veil of Isis had to be lifted; and now another and a larger rent is made. But old and time‐honoured errors—such as become with every day more glaring and self‐evident—stand arrayed in battle‐order now, as they did then. Marshalled by blind conservatism, conceit and prejudice, they are constantly on the watch, ready to strangle every truth, which, awakening from its age‐long sleep, happens to knock for admission. Such has been the case ever since man became an animal. That this proves in every case _moral death_ to the revealers who bring to light any of these old, old truths, is as certain as that it gives _life_ and _regeneration_ to those who are fit to profit even by the little that is now revealed to them.