“.....On that hill, in that cave, under that cliff – there are such things out there and anyone who goes to stay there should be careful and self-controlled. They should not carelessly think that because there are no other people and things to be seen or heard, that there is nothing else there. For there are many things which are more mysterious and subtle than the ordinary mind (citta) is able to experience. In fact, there is far more than the material things which we see about us in this world – but we have no senses which are suitably adapted to display clearly their existence to us in the way we perceive other things in the world. So even though they are there, few or many as it may be, it is as though they did not exist at all...”