He rose and strode to the mantel. When he faced me again he was holding a small square box in the palm of his hand. "I have here five pellets of the drug Liao. It was used by the Chinese philosopher Lao Tze, and while under its influence he visioned Tao. Tao is the most mysterious force in the world; it surrounds and pervades all things; it contains the visible universe and everything that we call reality. He who apprehends the mysteries of Tao sees clearly all that was and will be."