To know all about anything is to know how to deal with it under all circumstances.
对任何事情都了如指掌，就是知道在任何情况下如何处理它。
A LITTLE ENCOURAGEMENT
给此刻的你，一点向前的力量。
关于学习、善意与成长，读一句，再想一想。
Always forgive, but never forget, else you will be a prisoner of your own hatred, and doomed to repeat your mistakes forever.
永远宽恕，但永远不要忘记，否则你将成为自己仇恨的囚犯，并注定永远重复你的错误。
The student must remember, for his consolation...that his failures are almost as important to the cause of science and to those who follow him in the same road, as his successes. It is much to know what we cannot do in any given direction---the first step, indeed, toward the accomplishment of what we can do.
为了安慰他，学生必须记住……他的失败对于科学事业和那些追随他的人来说，几乎和他的成功一样重要。知道我们在任何方向上都不能做什么是很重要的——事实上，这是实现我们所能做的事情的第一步。