The Imagination is more than Memory, for the latter merely reproduces the impressions made upon it, while the Imagination gathers up the material of impression and weaves new fabrics from them or builds new structures from their separated units. As Tyndall well said: "Philosophers may be right in affirming that we cannot transcend experience; but we can at all events carry it a long way from its origin. We can also magnify, diminish, qualify and combine experiences, so as to render them fit for purposes entirely new. We are gifted with the power of imagination and by this power we can lighten the darkness which surrounds the world of the senses. There are tories, even in science, who regard imagination as a faculty to be feared and avoided rather than employed. But bounded and conditioned by cooperant reason, imagination becomes the mightiest instrument of the physical discoverer. Newton's passage from a falling apple to a falling moon was, at the outset, a leap of the imagination." Brooks says: "The imagination is a creative as well as a combining power.... The Imagination can combine objects of sense into new forms, but it can do more than this. The objects of sense are, in most cases, merely the materials with which it works. The imagination is a plastic power, moulding the things of sense into new forms to express its ideals; and it is these ideals that constitute the real products of the imagination. The objects of the material world are to it like clay in the hands of the potter; it shapes them into forms according to its own ideals of grace and beauty.... He, who sees no more than a mere combination in these creations of the imagination, misses the essential element and elevates into significance that which is merely incidental." Imagination, in some degree or phase, must come before voluntary physical action and conscious material creation. Everything that has been created by the hand of man has first been created in the _mind_ of man by the exercise of the Imagination. Everything that man has wrought has first existed in his mind as an _ideal_, before his hands, or the hands of others, wrought it into material _reality_. As Maudsley says: "It is certain that in order to execute consciously a voluntary act we must have in the mind a conception of the aim and purpose of the act." Kay says: "It is as serving to guide and direct our various activities that mental images derive their chief value and importance. In anything that we purpose or intend to do, we must first of all have an idea or image of it in the mind, and the more clear and correct the image, the more accurately and efficiently will the purpose be carried out. We cannot exert an act of volition without having in the mind an idea or image of what we will to effect."