Now the difference between the scientifical or biological point of view and the mystical or prophetic point of view is this: a materialistic scientist says, "Here is a rock. By a process of development a kind of life has come to it. Then vibrations increased. From animals came man; man is a developed animal. So from perfect denseness intelligence has developed." The mystical conception is different. A mystic does not trace the origin of life in the rock; he traces it in spirit. One may ask, "What is spirit?" Spirit is intelligence. One might think, "We do not see intelligence in a rock, in animals." The answer is that we must first distinguish between spirit and matter, understand what difference there is between the two. Spirit is finer matter, matter is dense spirit. In other words, water is snow and snow is water. When water is not frozen it is water and when frozen it is snow; when heated again it becomes water. It is the same with spirit and matter. There are many in this world inclined to say, "Matter does not exist." it is easy to say, but difficult to prove. Besides, is that not only a conception? Others say, "Spirit does not exist." What is needed is to understand the relation between the two and the difference between the two.