...Only let us persevere... 
William Still 「The Underground Railroad」
... These and other recollections of the past often saddened my spirit; but hope ,—cheering and bright, was now mine, and it lighted up the future and gave me patience to persevere...
Austin Steward 「Twenty-Two Years a Slave, and Forty Years a Freeman」
...I donothing for its relief, but persevere in the tonic treatment, and becomemore strict in my directions concerning diet...
Dinks, Mayhew, and Hutchinson 「The Dog」
...And nothing, nothing! It needed the sturdiest faith to make me persevere...
J. Henri Fabre Alexander Teixeira de Mattos 「The Life of the Fly」
...These workshops were likely to be dull,gloomy places, and only a strong desire to dosuch things as they saw their master doing, wouldinduce a boy to persevere through the firstdrudgery of the work...
Dolores Bacon 「Pictures Every Child Should Know」
...Once you have entered upon it, no persuasion will be neededto make you persevere...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
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