"Is it likely, we say, that what has happened over and over again — is it likely that, when looking back over our own great race, we see how the Teacher has come with each of these offshoots that we can trace in the past, that, as we see the beginning of a new vista when another type is developing, then the sequence of Teachers will be broken, and that one type for the first time will be left unguided, with none to shape its spiritual aspirations, with none to lay the foundation of the civilization that it will be its destiny to build?"