You could not have read such a beautiful defintion for imagination. By nature each and every living being have limited powers. Or it is said that nature has given certain powers to every living being. But with imagination you can overcome nature's power. You can imagine being in Moon, and within a fraction of a second, you are in moon. This is the power of imagination. This value of imagination is beautifully expressed in this imagination quote with the words "The Imagination is Man's Power Over Nature".