君子不责人所不及,不强人所不能。
翻译:每个人都有局限,不责备他人做不到的事,不强迫他人做力所不及的事,是待人的分寸。
Sometimes the most profound mathematics comes from playing with simple ideas until they reveal their hidden complexity.
The challenge of our time is to create a sustainable energy future.
Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.
Sustainability is not just about materials but about sustaining people's lives and dignity.