The general struggle for existence of animate beings is not a struggle for raw materials nor for energy which exists in plenty in the form of heat, unfortunately untransformably, in every body; it is a struggle for entropy, which becomes available through the transition of energy from the hot sun to the cold earth.
生物为生存而进行的普遍斗争，不是为了原材料，也不是为了能量——能量以热的形式大量存在于每个物体中（可惜无法转化）；而是为了熵，它通过能量从炽热的太阳转移到寒冷的地球而变得可用。
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
真正的领导力意味着为了更美好的明天而在今天做出艰难的决定。
——《北上宣言》，1924年11月
爱不像石头一样静止不动；它必须像面包一样被制作，不断重新制作，不断更新。