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The universe is comprehensible because it is governed by laws that we can understand.
The only limit to our realization of tomorrow is our doubts of today.
The real contest is always between what you've done and what you're capable of doing. You measure yourself against yourself and nobody else.
国家本质上是侵略性和扩张主义的,因为它们存在于一个无政府状态的国际体系中,没有更高的权威来约束它们。