The definition of a good mathematical problem is the mathematics it generates rather than the problem itself.
一个好的数学问题的定义是它产生的数学，而不是问题本身。
The best trades are the ones in which you have all three things going for you: fundamentals, technicals, and market tone. If you can find a trade that has all three of these characteristics, you have found a potential goldmine.
True leadership in energy means balancing today's needs with tomorrow's possibilities.
If not now, when? If not me, who?
The truth is often found in the margins.
In the desert, I had found a freedom unattainable in civilization.