Every mathematical problem has a solution; it just takes time and creativity to find it.
每个数学问题都有一个解决方案；只是需要时间和创造力来找到它。
Sustainability isn’t an option—it’s the future of our business.
Foreign powers do not seem to appreciate the true character of our Government.
学得越多，就越意识到自己知道的有多少。