From The Arkansas Gazette
4 minutes good
3 minutes excellent
2 minutes exceptional
90 seconds superior

After putting in the most used letter and word, I recognized the author. That pretty much gave away all the rest of the words. And the message is so true, but Being truthful you would need to add sweat (though that word somehow ruins the pretty poetic picture of the message.)
QXDUMZBU L NQIIMD XQO QI TBB, L QK Q ETPO BMMG RZGBT MC MKTXTDDTY. —BTMPBT JTPIQPG YUQV
Solution to previous puzzle (select the yellow text with your cursor to read):
ALTHOUGH I CANNOT LAY AN EGG, I AM A VERY GOOD JUDGE OF OMELETTES. —GEORGE BERNARD SHAW
HAL'S CRYPTOGRAM HELPER