我们要勇于面对挑战，敢于突破自我。
We must be brave to face challenges and dare to break through ourselves.
The American farmer is the only man in our economy who has to buy everything he buys at retail, sell everything he sells at wholesale, and pay the freight both ways.
数学的历史是人类好奇心和创造力的历史。
Data is the new oil, but what matters more is how to use it well.
Data is the new oil, but harder to control than oil.