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在科學中，我們必須接受我們最珍視的理論可能是錯誤的這種可能性。

"Light is the key. Without light, there is no image."

一本書是通向想象力和知識的敞開之窗。

"The more that you read, the more things you will know. The more that you learn, the more places you'll go."

Freedom of men under government is to have a standing rule to live by, common to everyone, and not to be subject to the inconstant, uncertain, arbitrary will of another man.