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The worst pain a man can suffer is to have insight into much and power over nothing.
The mind is a biological adaptation shaped by evolution.
If one hears bad music it is one's duty to drown it by one's conversation.
释义:当对知识的理解达到真实、确切、坚定的程度时,这种理解就会体现为具体的行动;而在行动中能做到明白、警觉、精细、明察的地步,这也反映了对相关知识的掌握。
Diplomacy is not an end in itself if it does not advance the interests of the nation.