ENDS AND MEANS recollection and in meditation. For these it is evident, 'as a synthetic truth about experience/ legitimately inferred from die empirical facts of their direct intuition, that there is an experience which is not the personal experience of a self. Such experience is not properly emotion, nor volition, nor even knowledge of the ordinary kind. Emotion, volition and knowledge are the forms of experience known to selves on the common levels of being. The experience known to selves who choose to fulfil the ethical and intellectual conditions upon which it is possible for an individual to pass to another level of being, is not their own emotion, their own volition, their own knowledge, but an unnamed and perhaps indescribable consciousness of a different kind, a consciousness in which the siibject- ' object relation no longer exists and which no longer belongs to the experiencing self. The physical world of our daily experience is a private universe quarried out of a total reality which the physicists infer to be far greater than it. This private universe is different, not only from the real world, whose existence we are able to infer, even though we cannot directly apprehend it, but also from the private universes in- habited by other animals—universes which we can never penetrate, but concerning whose nature we can, as Von Uexkull has done, make interesting speculative guesses. Each type of living creature inhabits a universe whose nature is determined and whose boundaries are imposed by the special inadequacies of its sense organs and its intelligence. In man, intelligence has been so far developed that he is able to infer the existence and even, to some extent, the nature of the real world outside his private universe. The nature of the sense organs and intelligence of living beings is imposed by biological necessity or con- venience. The instruments of knowledge are good enough to enable their owners to survive. Less inadequate instru- 2,96