We possess two types of will. I have elsewhere used the illustration of a bullet. The bullet is driven by an explosion of cordite. But the cordite, although powerful, is quite harmless and inexplosive on its own. At the end of the bullet there is a tiny cap of a substance called mercuric fulminate, which explodes instantly on contact. The hammer of the gun explodes the fulminate, and the fulminate explodes the more powerful cordite. Man possesses a fulminate will and a cordite will. If I am doing some routine job, like mowing the lawn, I use my cordite will. But it burns rather dully. If something really excites me or arouses my sense of urgency, it is the fulminate will that explodes, and that produces a roar of power from the cordite will. The fulminate will is tied up with the imagination and sense of purpose, and these in turn detonate my ordinary will-power and vitality.