The true test of a mathematical idea is its ability to inspire further thought.
数学思想的真正考验是它能否激发进一步的思考。
In saying that someone did something， we may be doing something ourselves.
The best thing about success is knowing that your work has paid off.
过去是一个陌生的国度；那里的人做事方式不同。
我们的矿工是美国最勤劳的人。
"I don't think about the past. I don't think about the future. I just think about now."