Aristotle's works have influenced science, religion, and philosophy for nearly two thousand years. He could be thought of as the father of logical thought. Aristotle wrote: "There is nothing in the intellect that was not first in the senses." He wrote that everything that is learned in life is learned through sensory perception. Aristotle was the first to establish the founding principle of logic. The great writer Dante called Aristotle "The Master of those who know." The Roman writer Cicero viewed Aristotle's work so highly that he called them "A River of Gold". Please Note: This book is easy to read in true text, not scanned images that can sometimes be difficult to decipher. The Microsoft eBook has a contents page linked to the chapter headings for easy navigation. The Adobe eBook has bookmarks at chapter headings and is printable up to two full copies per year.