死亡是唯一真正严肃的哲学问题。
Death is the only truly serious philosophical problem.
The energy transition will require unprecedented levels of investment and cooperation.
《在广州石围塘检阅滇均的演说》（1924年4月4日）
Men marry because they are tired, women because they are curious; both are disappointed.
TRANQUILLITY. Be not disturbed at trifles, or at accidents common or unavoidable.
成绩差距主要是知识差距。