Pursuing the Truth (4) The Real Contents of the Enlightenment
However, fortunately even in the scientific area, the reason why the practice of Zazen is so effective for us to become happier and healthier, has become clarified, and so it has become very clear why the practice of Zazen helps us. It might be very happy situations that in 19th, 20th, 21st Centuries the Modern Psychology and Physiology have developed so much, and it has become very clear that in our body and mind there is a nervous system, which is called the autonomic nervous system, and which is divided into two parts, the sympathetic nervous system and the parasympathetic nervous system. And the sympathetic nervous system is much related with the mental function, and the parasympathetic nervous system is much related with the sensuous function. And when the strength of sympathetic nervous and the strength of parasympathetic nervous system are equal, then there occurs a state, which is called Sunyata. The Sunyata is our original state, and when our autonomic nervous system is in balanced, our body and mind are quiet, our physical conditions are healthy, we can be active, and our behaviors of daily life are moral. When we are practicing Zazen every day, we can keep ourselves balanced.
Gautama Buddha's Teachings were born by relying upon his daily practice of Zazen. The reason why human beings can keep being original, healthy, active, and moral, hasn't be clarified for 2 thousand and several hundred years. But, relying upon the excellent western philosophy and science we have clalified the True Situations of Valuable Zazen for the first time.