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The study of mental processes requires both experimental and comparative methods.

Life is just a series of trying to make up your mind.

過去總是緊張的，未來是完美的。

The poor often lack the information needed to make good choices, and when they do have it, they often don’t trust it.

The difference between good and great is the attention to detail.

數(shù)學(xué)是一種讓我們能夠描述無法描述的事物的語言。