The last and most delicate degree of intuition is revelation. This comes to prophets and perfected beings. This is a full light thrown upon the human personality, full light from within. To their eyes, ears, sense of taste or touch, all things disclose their secret. Those who have received this knowledge even partly, have by receiving it come to understand the properties of this plant or that, to know that this bitter medicine is good for this purpose, this sweet one for that, this drug or that vegetable for another. The knowledge of the property of the names and forms of the world is understood by them to the extent that revelation has helped them. When they look into the mind, they know all about the mind. When they study the earth, they come to know it. Whatever they try to know, they succeed in knowing; such is revelation. Those who look in the higher spheres are prophets, those who look on the earth are scientists, musicians, soldiers, and so on. It is from the direction in which he has studied that a man receives the revelation. In the higher spheres all things become clear to those who direct their attention to these spheres.