Change is uncomfortable, but stagnation is fatal.

Success is stumbling from failure to failure with no loss of enthusiasm.

I believe that love is a better teacher than the sense of duty， he said， at least for me.

计算机科学中的挑战不仅仅是解决问题，而是找到正确的问题来解决。

数学不是关于数字、方程、计算或算法的：它是关于理解的。