Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
数学不是关于数字、方程、计算或算法的:它是关于理解的。
哲学实际上应该只被写作一种诗歌形式。
实现明天理想的唯一障碍是今天的疑虑。
"You can't do anything about the length of your life, but you can do something about its width and depth."