In the last fifteen years, biology has made such considerable progress that it arouses the highest hopes. But despite the importance of the discoveries, particularly in the field of molecular genetics, one must admit that much still remains to be done if life is to be appreciated as a whole, including superior organisms. However, research is facing the complexity of the problem with ever-increasing success, moving in a completely new direction, not simply on a cellular level, but on a molecular and atomic scale. It is this radical change in thinking methods that might perhaps enable the scientist of today to study hitherto out-of-the-way fields, albeit still from a highly speculative point of view, by giving him scope for new ways of thinking. This is particularly true of psychology which, it seems, has not as yet been the subject of reasoning on a molecular scale.