写作是一种乐观的行为。如果你觉得它不重要，你就不会费心去做。

The truth about a person is often hidden in the gaps between what they say and what they do.

The road to success is always under construction.

《在广州石围塘检阅滇均的演说》（1924年4月4日）

"We are all the sum of our hesitations."

理论物理学实际上是哲学。