数学是逻辑思想的诗歌。
"Your most unhappy customers are your greatest source of learning."
The best way to predict the future is to invent it.
在采矿作业中，安全必须始终放在第一位。
世界是一本书，不旅行的人只读了一页。
Once in a while the phenomena we exploit are particularly present. We like a reasonable amount of volatility. In our business we want some action. “Tumult is usually good for us. We don’t have credit lines of any significance. We don’t do a lot of leveraged-type financing.