6. So, not being in possession of identical knowledge, all living beings consequently come to differ from each other in their interaction with nature, and thus come to experience widely differing fates, or forms of existence. And it is precisely through the chain of differing fates, or forms of existence thus evolved, that we are able to state that living beings are progressing through darkness into light, just as it is the perfect knowledge of this same chain that reveals to us from whence we come, where we are going, who we are and how to live, in order to bring our own expression of energy into contact with the manifestation directed towards us by nature, and so make ourselves subject to complete happiness. As this happiness or perfect fate of the individual thus depends upon an absolutely true knowledge of the profoundest laws and eternal basic principles of life and hence the knowledge of the very purpose of life, then from a cosmic point of view - because terrestrial mankind is still unaware - the acquisition of such knowledge will be synonymous with "the one thing needful".