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Internal mental events are irrelevant to the scientific study of behavior.

當你想要改變時，你不可能取悅所有人。如果你真的取悅了所有人，那說明你的進步還不夠大。

Coal isn't just a commodity; it's the foundation upon which modern civilization was built.

True progress in agriculture is measured by health, not just yield.

一個社會進步的真正標準在于它如何對待最弱勢的群體。

Success is measured not just in profits, but in positive impact.

人生は、小さな幸せの積み重ねでできている。

"Maybe you can afford to wait. Maybe for you there’s a tomorrow. Maybe for you there’s one thousand tomorrows, or three thousand, or ten, so much time you can bathe in it, roll around it, let it slide like coins through your fingers. So much time you can waste it. But for some of us there’s only today. And the truth is, you never really know."