Memory is fragile and the space of a single life is brief, passing so quickly that we never get a chance to see the relationship between events.
记忆是脆弱的，而人生的空间短暂，转瞬即逝，我们永远无法看清事件之间的联系。
The theory of Communism may be summed up in one sentence: Abolish all private property.
The discovery of quantum algorithms has fundamentally changed our understanding of computational complexity.