“There are in astronomy refinements of method, both practical and theoretical, which can be appreciated only by rare gifts and profound study. But the elementary methods are quite within the reach of ordinary minds. The {{w|Scientific law|law}}, which it was difficult to discover, may be very easily understood and its results readily traced. It might require a Newton or a La Place to unveil the mechanism of the heavens, but when that is once done every beholder may watch the wonderful evolutions.”