104 WORLD-POWER AND EVOLUTION 



creased. Moreover, the ebb and flow of business and the stress 

 and strain of social life might become less wearing and harmful. 

 Who can tell what more might be accomplished? Our best 

 moments are those when our bodies feel strong and our wills 

 courageous. 



(Note. For a further discussion of the air in our houses in 

 winter, and of the methods of obtaining ideal conditions, see 

 Appendices E and F.) 



