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The concept of legal validity is crucial for understanding the nature of law.

The very shaping of history now outpaces the ability of men to orient themselves in accordance with cherished values. And which values? Even when they do not panic, men often sense that older ways of feeling and thinking have collapsed and that newer beginnings are ambiguous to the point of moral stasis.

最危險的故事是我們講給自己的故事。

科學不僅僅是關于發現，也是關于應用知識來改善人類生活。