There are many examples of the appeal to a special providence which awaken the curiosity of the modern man. In cases of severe sickness, prayer for restoration to health is offered in the churches and homes. If God is a personal agent affected by the desires of his worshipers, this act is perfectly logical. Yet the nature of sickness is now so well known that we see in it a cause and effect relation of a definite sort. Knowledge of impersonal agency is undermining the faith in super-human agency. Perhaps the fact that such prayers have never stayed a plague, while active measures of a scientific sort have done so, has had something to do with the purely formal and traditional character of such prayers among civilized men. Another instance which has caused many cynical comments is the appeal to God to bring victory to the nation in time of war. Both combatants pray to the same deity with about equal fervency and, at the same time, make as careful preparations as possible for the actual warfare. The religious ceremonies appear to play the part of an emotional accompaniment for the grimmer proceedings on the battle-field. To the soldier, God stands for the element of chance; otherwise, the main precept is to keep the powder dry.
When we enter the domain of science, we at once realize that a different conception of agency is held. The universe is regarded as a closed system of causal { 118} relations which spring from the nature of its parts. It is a systematic and self-contained world whose activities can be explained by the discovery of laws which constantly hold and which grow out of the stable properties of nature itself. As the result of a close and accurate study of the various aspects of nature, science has come to the conclusion that the large bulk of the world is lifeless and that its parts react in habitual or mechanical ways which are invariable. The planets circle about the sun in accordance with the pull and haul of forces which work in the same direction from year to year and lead to the same mathematically describable result. By means of measurements and calculations, celestial mechanics has been able to predict eclipses centuries ahead and to test historical records in regard to those which happened thousands of years ago. The paths of comets have been calculated and their return to the solar system foretold. Thus the mass-movements of the universe have been seen to be mechanical in nature and expressive solely of the energies and configurations distributed throughout its parts. The events which happen are inevitable and arise out of the impersonal agency of spatially existent things. In what sharp contrast is this view of nature to the interpretation primitive man made for himself when he read his own emotions and desires into the things around him. Caprice and whim have no place in this regular procession of the heavens.