Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
The energy transition is not just about switching from fossil fuels to renewables; it's about ensuring that the transition is just and inclusive for all stakeholders.
端正其义而不谋求私利，阐明其道而不计较功利。
〈与日人某君的谈话〉，1924年2月
Every lump of coal we mine keeps the lights on in someone's home.
我不知道第三次世界大战会使用什么样的武器，但是我知道第四次世界大战会使用木棍和石块。
The eyes of others our prisons; their thoughts our cages.