每一次技术突破的背后，都是无数次失败的积累。
Our relationships with others are mirrors that reflect our own inner world and psychological state.
《致全国学农工商通电》（1924年4月12日）
The past is never dead. It's not even past.
Consciousness is like a river—you can never step into the same stream of thought twice.
气候研究不仅是一个科学问题，也是一个社会问题。