THE FOUNDATION OF THE CITY 123 



surface, just as the flight of the condor, the song of the 

 nightingale, declare the highest degree of existence their 

 species allows. But the evocation of this feeble cry, when- 

 ever opportunity offers, is none the less one of our most un- 

 mistakable duties ; nor should we let ourselves be discouraged 

 by its apparent futility. 



