数学不是一项观赏性运动。
The key to happiness is to have dreams. The key to success is to make your dreams come true.
Food safety is the lifeline of aquaculture and must never be relaxed.
民主是最差的一种政治制度，除了所有那些其他被实验过的政治制度之外。
最糟糕的失明是不愿看见的人的失明。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的：它是关于理解的。