Theosophical literature, from the outset of the great movement it inaugurated, has been largely concerned with previously unknown laws governing the … - Alfred Percy Sinnett

It will readily be supposed that the chain of worlds to which this earth belongs are not all prepared for a material existence exactly, or even approximately resembling our own. There would be no meaning in an organized chain of worlds which were all alike, and might as well all have been amalgamated into one. In reality the worlds with which we are connected are very unlike each other, not merely in outward conditions, but in that supreme characteristic, the proportion in which spirit and matter are mingled in their constitution. Our own world presents us with conditions in which spirit and matter are on the whole evenly balanced in equilibrium. Let it not be supposed on that account that it is very highly elevated in the scale of perfection. On the contrary, it occupies a very low place in that scale. The worlds that are higher in the scale are those in which spirit largely predominates. There is another world attached to the chain, rather than forming a part of it, in which matter asserts itself even more decisively than on earth, but this may be spoken of later.

People in the present day will be slow to believe that any knowledge worth considering can be found outside the bright focus of Western culture. Modern science has accomplished grand results by the open method of investigation, and is very impatient of the theory that persons who ever attained to real knowledge, either in sciences or metaphysics, could have been content to hide their light under a bushel. So the tendency has been to conceive that occult philosophers of old- Egyptian priests, Chaldean Magi, Essenes, Gnostics, theurgic Neo-Platonists, and the rest-who kept their knowledge secret, must have adopted that policy to conceal the fact that they knew very little. Mystery can only have been loved by charlatans who wished to mystify. The conclusion is pardonable from the modern point of view, but it has given rise to an impression in the popular mind that the ancient mystics have actually been turned inside out, and found to know very little. This impression is absolutely erroneous. (Introduction)

The external forms and fancies of religion in one age may be a little purer, in another a little more corrupt, but they inevitably adapt themselves to their period, and it would be extravagant to imagine them interchangeable.