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教科書のように一つの正答が用意されているということはない。

"You can't have a better tomorrow if you are thinking about yesterday all the time."

"If you have always done it that way, it is probably wrong."

"High achievement always takes place in the framework of high expectation."

"The world hates change, yet it is the only thing that has brought progress."

"A problem well stated is a problem half solved."

"My interest is in the future because I am going to spend the rest of my life there."

チャールズ・ケタリング(発明家）

『しなかったこと、やらなかったこと』が

「私は貧乏で、体が弱くて、学歴がなかった(中卒)、だから成功できた』