The novel is the one bright book of life. Books are not life. They are only tremulations on the ether.

You are never too old to set another goal or to dream a new dream.

超导理论不仅仅是一种特定现象的理论，而是量子凝聚态物质的一般理论。

邪恶胜利的唯一必要条件是好人无所作为。

Loneliness is the human condition, and no amount of technology can change that.

——从浙江观潮返上海后题词，1916年9月15日

Change is inevitable, but growth is optional.