On the other hand, it is not a highly-developed religion. Its beliefs are those of extremely early times, and represent a stage of thought at which no other national religion stood still. The organisation common to developed systems is entirely wanting; there is no idol, no priestly class, no Bible, no theology; the most important doctrines are left so vague and undetermined that scholars interpret them in opposite ways. It is a religion in which, just as in the primitive stage, outward acts are everything, the doctrine nothing, and which is not regulated by an organised code but by custom and precedent. All these marks point to a formation in very early times, and to a very early arrest of growth, before the ordinary developments of mythology and doctrine, priesthood, ritual, and sacred literature had time to take place. They also point to the operation of some powerful cause, which, when the religion had developed its main features, was able to suppress older beliefs and practices, and lead the nation to devote itself altogether to the newer faith. How this took place we can only conjecture, but certainly it could never have been done unless the new faith and the national character had fitted each other perfectly. The classical religion may, as Prof. de Groot says, have come into existence along with the classical constitution set up by the Han dynasty 2000 years ago. But it must have been ready to enter into this position. The objects of worship in the Chinese religion arrange themselves in three classes. The Chinaman of old worshipped and his descendant of to-day worships still-- 1. Heaven. 2. Spirits of various kinds, other than human. 3. The spirits of dead ancestors. 1. Heaven (Thian) is the principal Chinese deity; in strictness we must say the sole deity, for there is no family of upper gods; heaven receives all the worship that is directed aloft. It is the clear vault, the friendly ever-present and all-seeing blue that is meant, not the windy nor the rainy sky, but that which is above all agitations, and which all beings of the air or of the earth look up to and serve. It is conceived as living. It is not a separable spirit, not a power behind, that is worshipped, but heaven itself,--the living heaven of that early thought, which has not yet come to distinguish between matter and spirit,--the living heaven which is over all, knows all, orders and governs all.