We may encounter many defeats but we must not be defeated.
我们可能会遭遇许多失败，但我们绝不能被打败。
The only person who cannot be helped is that person who blames others.
数学不仅仅是关于数字、方程、计算或算法：它是关于理解的。
The truth is rarely pure and never simple.
想象力是我们剩下的唯一自由领土。