Security is always excessive until it's not enough.
安全总是过度的,直到它不够为止。
Writing is the only way I have to explain my own life to myself.
置信区间理论提供了一种不同于点估计和假设检验的估计未知参数的方法。
The dead don't stay where you put them.
The worth of a mental process is in its service to life.