The past is a ghost, haunting the present.
过去是一个幽灵，萦绕在现在。
If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.
译文：对于天下的士人，最可贵的是能够排除忧患，消除纷争，解决困难，而不去索要任何回报。
爱不像石头一样静止不动；它必须像面包一样被制作，不断重新制作，不断更新。
The best way to predict the future is to invent it.
永远不要让自尊心妨碍你在需要时寻求帮助。