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Law is not a system of rules, but a system of rules and principles.
因果推理的力量在于它允许我们预测我们从未采取的行动的效果。
All mankind... being all equal and independent, no one ought to harm another in his life, health, liberty, or possessions.
The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.