LAW; ITS DEFINITIONS. 91 



complicated conditions, for the purposes of flight. 

 Anatomy supplies an infinite number of similar 

 examples. It is impossible to describe or explain 

 the facts we meet with in this or in any other 

 branch of Science without investing the " laws " of 

 Nature with something of that Personality which 

 they do actually reflect, or without conceiving of 

 them as partaking of those attributes of Mind 

 which we everywhere recognise in their working 

 and results. 



We may, again, take the Forces which determine 

 the Planetary motions as the grandest and the 

 simplest illustrations of this truth of Science. 

 Gravitation, as already said, is a Force which pre- 

 vails apparently through all Space. But it does 

 not prevail alone. It is a Force whose function it 

 is to balance other Forces, of which we know 

 nothing, except this, — that these, again, are needed 

 to balance the Force of Gravitation. Each Force, 

 if left to itself, would be destructive of the Uni- 

 verse. Were it not for the Force of Gravitation, 

 the centrifugal Forces which impel the Planets 

 would fling them off into Space. Were it not for 

 these centrifugal Forces, the Force of Gravitation 



