Every thought of form, held in thinking substance, causes the creation of the form, but always, or at least generally, along lines of growth and action already established. The thought of a house of a certain construction, if it were impressed upon formless substance, might not cause the instant formation of the house, but it would cause the turning of creative energies already working in trade and commerce into such channels as to result in the speedy building of the house. And if there were no existing channels through which the creative energy could work, then the house would be formed directly from primal substance, without waiting for the slow processes of the organic and inorganic world.  

No thought of form can be impressed upon original substance without causing the creation of the form. A person is a thinking centre and can originate thought. All the forms that a person fashions with his hands must first exist in his thought. He cannot shape a thing until he has thought that thing. So far, humankind has confined its efforts wholly to the work of its hands, applying manual labour to the world of forms and seeking to change or modify those already existing. Humankind has never thought of trying to cause the creation of new forms by impressing thought upon formless substance. When a person has a thought-form, he takes material from the forms of nature and makes an image of the form which is in his mind.