Then welcome each rebuff  
  That turns earth's smoothness rough,  
  Each sting that bids nor sit nor stand, but go!  
  Be our joys three-parts pain!  
  Strive, and hold cheap the strain;  
  Learn, nor account the pang; dare, never grudge the throe!
Rabbi Ben Ezra. - Bartlett's Familiar Quotations, 10th ed. (1919)























