306 THE STORY-BOOK OF SCIENCE 



the road to follow. Either I am a triple idiot or we 

 have here an admirable chain of facts. Later, my 

 children, you will find only too many people saying : 

 This world is the product of chance, no intelligence 

 rules it, no Providence guides it. To those people, 

 my friends, show the snap-dragon's yellow spot. If, 

 less clear-sighted than the burly bumble-bee, they do 

 not understand it, pity them: they have diseased 

 brains. " 



