From Ayn Rand’s Atlas Shrugged:
Have you ever looked for the root of production? Take a look at an electric generator and dare tell yourself that it was created by the muscular effort of unthinking brutes. Try to grow a seed of wheat without the knowledge left to you by men who had to discover it for the first time.
Try to obtain your food by means of nothing but physical motions and you’ll learn that man’s mind is the root of all the goods produced and of all the wealth that has ever existed on earth.
Be sure to “friend” Dr. Hurd on Facebook. Search under “Michael Hurd” (Rehoboth Beach DE). Get up-to-the-minute postings, recommended articles and links, and engage in back-and-forth discussion with Dr. Hurd on topics of interest.