Tao Te Ching - Chapter Twenty-One A man of great virtue is one who follows the nature way of Tao. This Tao is vague and intangible. Yet, in the vague and void, there is image, there is substance. Within the profound intangible, there is essence; This essence is genuine. In It lies the great faith. Since the beginning of the world, Tao has been in existence. Only through It that one can understand the origin of all beings. How do I know that this is the true essence? It is through this natural Way.