These live sciences, like the present one, are works of transition from development to evolution. When a human being evolves he has to cope somehow with the fact that 'everything changes', even the meaning of 'everything' and of 'change'. How he goes about this, necessarily with the help of the spirit of truth, depends on his constitution and on his gifts or talents - in other words on what he brought with him into the world at his birth. Of course he must discover - and it will partly be revealed to him - how he is to work and what kind of work he is to do during his evolution. He is to die to the old world and to build up his endless world. Works which arise from such initial evolutionary impulses, such these live sciences like the present, will then stimulate and facilitate the transition in some others who are ready to evolve.