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The only way to do great work is to love what you do.

When you want to change things, you can't please everyone. If you do please everyone, you aren't making enough progress.

谷物生產(chǎn)的效率不是選擇，而是必需。

"The only limit to our realization of tomorrow is our doubts of today."

我不是圣人，我是罪人。