Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
The smallest moments can hold the greatest truths.
You cannot hope to build a better world without improving the individuals. To that end, each of us must work for our own improvement and, at the same time, share a general responsibility for all humanity, our particular duty being to aid those to whom we think we can be most useful.
改变某人最有效的方法是改变你与他们互动的方式。