The vibrations of thought and feeling create, procure and prepare of themselves all the necessary means for their manifestation on the surface. For example a person may desire to eat fish and, instead of ordering it, might think strongly of it. His thought-vibrations thus speaking to the mental ears of the cook transmit this desire, and perhaps his strong feeling would even attract a fishmonger to the house. In this way the thoughts of sages work out their destiny according to the strength, power and purity of their minds. A certain degree of thought-power is needed to bring about a certain result, as so much dynamite is required to blast a single rock, and an infinitely greater quantity is necessary to make a tunnel through a mountain.