差之毫厘，失之千里。
开始时有一点差错，结果会造成极大的错误。
I have always considered that the true test of a machine is its practical utility in the hands of the common laborer.
If you don't give up, you still have a chance. Giving up is the greatest failure.
我不喜欢欠下人情，这样会压逼著我，令我觉得自己是个奴隶。我宁愿自己处理自己的事，不用依靠别人，能够完全独立。
The teacher should not teach as if he were pouring knowledge into an empty vessel, but rather as if he were lighting a fire.
出自《抱朴子·广訾》。病到很急的时候就会觉得良医是重要的了，世道动乱的时候就会觉得忠贞的臣子是重要的了。