One day I was lecturing in England, and among the audience was a well-known scientist. After the lecture he came to me and said, "I am very interested, but there is one thing that puzzles me. I cannot understand the word "within." What do you mean? Within the body? We can only understand inside the body." This shows the difficulty of reaching a common understanding between science and mysticism. One day it will be overcome. It is only a temporary difficulty.