It's not whether you get knocked down, it's whether you get up.
电脑只是一个工具。铅笔也是一个工具。关键在于你如何使用它。
数学家的工作永无止境;总有更多的问题需要解决。
It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change.
"We do not lack communication, on the contrary, we have too much of it. What we lack is creation."