80% of life's most defining moments take place by age 35.
A good editor knows when to hold on a shot and when to cut away.
No president who performs his duties faithfully and conscientiously can have any leisure.
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。
A painting must be beautiful in itself, not because it represents something beautiful.
