BRAIN V. MUSCLE IN NATURE 



NO observer of animals can fail to have 

 noticed how they seem to lack brain-power. 

 Judged by human standards, a bird or beast 

 is but a stupid creature. If, however, we 

 measure the other organs of animals by a similar 

 standard, we shall not find them wanting. The adapta- 

 tion of nearly every species to its environment compels 

 our admiration. Some are wonderful athletes, others 

 are possessed of marvellous strength, others exhibit 

 incredible powers of endurance ; in short, there is no 

 physical characteristic in which some animal is not 

 pre-eminent. There exist dozens of animals that are 

 physically superior to man. But, notwithstanding this 

 superiority, they are all his slaves, for mentally he is 

 head and shoulders above them. Muscle is no match 

 for mind. 



Why is it that, of all the millions of animals, only 

 one species — Homo sapiens — has " gone in for " brain 

 development on a large scale ? 



Other things being equal, it is obvious that the animal 

 with the largest brain has the best chance of survival in 

 the struggle for existence. As compared with brain 

 power all other qualities are of minor importance. If 



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