THE BIOLOGY OF HEALTH 157 



fied with some of the real joys of life, may soon be- 

 come a habit. Those who find good reason for rejoic- 

 ing — in the sunshine and stars, in the flowers and 

 birds, in works of art and the faces of their friends 

 — wish for no reward, but they will get it all the same. 

 In Conclusion. — Even an introductory study of the 

 Biology of Health brings into prominence two ideas 

 — (1) that, shelter and bolster ourselves as we may, 

 survival of nationalities among mankind must ulti- 

 mately in part depend on being genuinely healthy- 

 bodied and healthy-minded ; and (2) that the effect 

 wpon our health is a touchstone of behaviour which 

 we can use within certain fields with some subtlety, 

 with great security, and with much profit both to 

 ourselves and other people. 



