enter the dimension of space that contains them. Human beings as we know them are merely fractions, infinitesimally small fractions of one enormous whole. Every human being is linked with all the life that has preceded him on this planet. All of his ancestors are parts of him. Only time separates him from his forebears, and time is an illusion and does not exist."
"I think I understand," I murmured.
"It will be sufficient for my purpose if you can form a vague idea of what I wish to achieve. I wish to strip from my eyes the veils of illusion that time has thrown over them, and see the beginning and the end."
"And you think this new drug will help you?"
"I am sure that it will. And I want you to help me. I intend to take the drug immediately. I cannot wait. I must see." His eyes glittered strangely. "I am going back, back through time."
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."
"Rubbish!" I retorted.
"Tao resembles a great animal, recumbent, motionless, containing in its enormous body all the worlds of our universe, the past, the present and the future. We see portions of this great monster through a slit, which we call time. With the aid of this drug I shall enlarge the slit. I shall behold the great figure of life, the great recumbent beast in its entirety."
"And what do you wish me to do?"
"Watch, my friend. Watch and take notes. And if I go back too far you must recall me to reality. You can recall me by shaking me violently. If I appear to be suffering acute physical pain you must recall me at once."
"Chalmers," I said, "I wish you wouldn't make this experiment. You are taking dreadful risks. I don't believe that there is any fourth dimension and I emphatically do not believe in Tao. And I don't approve of your experimenting with unknown drugs."
"I know the properties of this drug," he replied. "I know precisely how it affects the human animal and I know its dangers. The risk does not reside in the drug itself. My only fear is that I may become lost in time. You see, I shall assist the drug. Before I swallow this pellet I shall give my undivided attention to the geometric and algebraic symbols that I have traced on this paper." He raised the mathematical chart that rested on his knee. "I shall prepare my mind for an excursion into time. I shall approach the fourth dimension with my conscious mind before I take the drug which will enable me to exercise occult powers of perception. Before I enter the dream world of the Eastern mystics I shall acquire all of the mathematical help that modern science can offer. This mathematical knowledge, this conscious approach to an actual apprehension of the fourth dimension of time will supplement the work of the drug. The drug will open up stupendous new vistas—the mathematical preparation will enable me to grasp them intellectually. I have often grasped the fourth dimension in dreams, emotionally, intuitively, but I have never been able to recall, in waking life, the occult splendors that were momentarily revealed to me.
"But with your aid, I believe that I can
