The only real mistake is the one from which we learn nothing.
唯一真正的错误是我们没有从中学到任何东西。
-- John Powell 约翰·鲍威尔
The only real mistake is the one from which we learn nothing.
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The only real mistake is the one from which we learn nothing.
唯一真正的错误是我们没有从中学到任何东西。
-- John Powell 约翰·鲍威尔
