绝不能为了速度或成本而牺牲质量。

Every problem in mathematics is a puzzle waiting to be solved, and the joy is in the solving.

I believe that if you keep your faith, you keep your trust, you keep the right attitude, if you're grateful, you'll see God open up new doors.

Mental processes are means to ends in the struggle for existence.

译文：言语过多就会说错话，就容易招惹是非，争强好胜欲望多，就会烦恼不断。赏析：人要少说话，多做事，言多必有失，放一个平常心，顺其自然，行事更要低调。