Spiritism has come to  shed light on  a multitude  of obscure points; however, it does not shed it indiscriminately. The Spirits proceed in their teachings with admirable prudence. Only successively and gradually have they broached the various subjects of the Doctrine, and it is thus that the others will be revealed to the degree that the time comes for bringing them out of the darkness. If they had presented the Doctrine completely at the start, it would have been accessible only to a small number; moreover, it would have alarmed those who were not yet prepared, which would have harmed its spread. Thus, if the Spirits have not yet said everything ostensibly, it is not because there are mysteries  in the Doctrine reserved only for the privileged or because they have placed the lamp under a bushel, but because each thing must arrive at the appropriate time. The Spirits allow each idea time to mature and spread before they present another, and for events to prepare its acceptance.