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Psychology must be based on direct experience, not inference.

尋找真理的人的存在，遠比那些認為自己已經找到真理的人的存在更值得珍視。

Time is not the medicine, the medicine is in time.

我們使用的詞語就像我們穿的衣服。它們可以讓我們看起來聰明或愚蠢，善良或殘忍，堅強或軟弱。

過去不是一個居住的地方，而是一個學習的地方。

Every improvement in the circumstances of the society tends either directly or indirectly to raise the real rent of land, to increase the real wealth of the landlord, his power of purchasing the labour, or the produce of the labour of other people.

智慧之鳥的貓頭鷹，在文明的暮色中才開始起飛。

在市場中賺錢的關鍵不是每次都正確，而是正確的次數比錯誤的次數多。

The definition of a good mathematical problem is the mathematics it generates rather than the problem itself.

The plan is the generator of architecture.

The dead are invisible, but they are not absent.

生活就是斗爭。