“We put thirty spokes together and call it a wheel; but it is on the space where there is nothing that the utility of the wheel depends. Â We turn clay to make a vessel; but it is upon the space where there is nothing that the utility of the vessel depends. Â We pierce doors and windows to make a house; and it is on these spaces where there is nothing that the utility of the house depends. Â Therefore, just as we take advantage of what is, we should recognize the utility of what is not.” – – Lao Tse [believed to be a contemporary of Confucius during 5th century BC] ancient Chinese philosopher and poet