Man is ignorant of the nature of his own being and powers. Even his idea of his limitations is based on experience of the past, and every step in his progress extends his empire. There is, therefore, no reason to assign theoretical limits to what he may be, or to what he may do. Illustration: Two generations ago it was supposed theoretically impossible that man should ever know the chemical composition of the fixed stars. It is known that our senses are adapted to receive only an infinitesimal fraction of the possible rates of vibration. Modern instruments have enabled us to detect some of these suprasensibles by indirect methods, and even to use their peculiar qualities in the service of man, as in the case of the rays of Hertz and Röntgen. As Tyndall said, man might at any moment learn to perceive and utilize vibrations of all conceivable and inconceivable kinds. The question of Magick is a question of discovering and employing hitherto unknown forces in nature. We know that they exist, and we cannot doubt the possibility of mental or physical instruments capable of bringing us in relation with them.