If I were to make an analogy, thought and philosophy would be like the heart or respiratory system of the human body. When the heart is sound, the whole body can maintain healthy activity. This same principle applies to both the individual and society. The SGI has a mission to serve as the heart that ensures the healthy functioning of society. Consequently, taking good care of the SGI (the heart) allows the fresh life-giving blood of humanism to flow to and nourish all areas of society, including culture, politics and the economy.
from sgi.org