Every challenge is an opportunity to learn and grow.
The best moments in our lives are not the passive, receptive, relaxing times… The best moments usually occur if a person’s body or mind is stretched to its limits in a voluntary effort to accomplish something difficult and worthwhile.
朋友都是有共通点的 (物以类聚)。
"A good book should leave you slightly exhausted at the end. You live several lives while reading it."
The beauty of mathematics lies in its ability to describe the world in a language that is universal.