有用是这些老人曾经对自己最好的希望，而无目的是他们最深的恐惧。
"To be useful was the best thing the old men ever hoped for themselves, and to be aimless was their worst fear."
I'm the reason your clock won't tick.
我们实现明天的唯一限制将是我们今天的怀疑。
Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle. As with all matters of the heart, you'll know when you find it. And, like any great relationship, it just gets better and better as the years roll on. So keep looking until you find it. Don't settle.
一切皆可为多或少，视时机与人而定。
