'Tis better to have tried in vain,  
Sincerely striving for a goal,  
Than to have lived upon the plain  
An idle and a timid soul.  
 
'Tis better to have fought and spent  
Your courage, missing all applause,  
Than to have lived in smug content  
And never ventured for a cause.  
 
For he who tries and fails may be  
The founder of a better day;  
Though never his the victory,  
From him shall others learn the way.
Edgar Albert Guest
http://www.poemhunter.com/poem/failures-10/