Oh, sons of earth! attempt ye ...

Oh, sons of earth! attempt ye still to rise. By mountains pil\'d on mountains to the skies? Heav\'n still with laughter the vain toil surveys, And buries madmen in the heaps they raise.
Oh, sons of earth! attempt ye still to rise. By mountains pil'd on mountains to the skies? Heav'n still with laughter the vain toil surveys, And buries madmen in the heaps they raise.

More phrases

Effort only fully releases its reward after a person refuses to quit.
Never complain and never explain.
A good plan violently executed now is better than a perfect plan executed next week.
 George S. Patton
Problems are not stop signs, they are guidelines.
 Robert Schuller
Never give up, for that is just the place and time that the tide will turn.
 Harriet Beecher Stowe

Quotes from the same author

Do good by stealth, and blush to find it fame.
Never find fault with the absent.
Blessed is the man who expects nothing, for he shall never be disappointed.
By music minds an equal temper know, Nor swell too high, nor sink too low. . . . . Warriors she fires with animated sounds. Pours balm into the bleeding lover's wounds.
Pours balm into the bleeding lover's wounds.