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一个好的系统设计是使做正确的事情变得容易,做错误的事情变得困难。
If you want to go fast, go alone. If you want to go far, go together.
儿童的进步不是取决于年龄,而是取决于能够自由地观看他周围的一切。
The only way to get rid of a temptation is to yield to it.