“Chi Wan thought thrice, and then acted. When the Master was informed of it, he said, "Twice may do."”
Source: The Analects, Chapter V
Original
季文子三思而後行。子聞之曰、再、斯可矣。
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Confucius 269
Chinese teacher, editor, politician, and philosopher -551–-479 BCRelated quotes

Smith v. Hughes (1871), L. R. 6 Q. B. 607.

“For our Master’s sake, may He make us willing to do or suffer all His will.”
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Context: The "mountain-sea" spirit means that it is bad to repeat the same thing several times when fighting the enemy. There may be no help but to do something twice, but do not try it a third time. If you once make an attack and fail, there is little chance of success if you use the same approach again.