应该引导孩子通过自己的活动去发现真理。

There is no easy walk to freedom anywhere, and many of us will have to pass through the valley of the shadow of death again and again before we reach the mountaintop of our desires.

在计算中，不变量是短暂的。

"The universe is not only stranger than we imagine, it is stranger than we can imagine."

那么为什么我要谈论失败的好处呢？因为失败意味着剥离掉那些不必要的东西。我因此不再伪装自己、远离自我，而重新开始把所有精力放在对我最重要的事情上。