The surface of a painting is like a skin - it holds everything together.
画的表面就像皮肤一样，它把所有东西都结合在一起。
Don't watch the clock; do what it does. Keep going.
持续经济增长的关键不是物质资本的积累，而是知识的积累。
No man's knowledge here can go beyond his experience.
Efficiency is doing things right; effectiveness is doing the right things.
The most dangerous thing in the world is to try to leap a chasm in two jumps.
"The most important thing in empirical work is to be clear about the question you are trying to answer."