Every year we see marvelous and wonderful progress in the field of medical science. At one time diphtheria was one of the dreaded diseases of humankind. But today, nobody is afraid of diphtheria; it has practically been eliminated. So has smallpox, and thank God, so has polio. Pneumonia used to be a dreaded disease, but today, the physicians have medicines that can deal with pneumonia. Great progress is being made daily in the field of cancer. Medical science marches on to new heights.