每个实验都是与自然的对话，有时自然会对我们耳语它的秘密。

I'm not a product of my environment. My environment is a product of me.

The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

The most important thing is to have the courage to follow your heart and intuition. They somehow already know what you truly want to become.

——〈在广州农民运动讲习所第一届毕业礼演说〉，对讲习所学员发出警告，无法在中国发动阶级斗争，反之应该要用平和方法，以合作为诉求，1924年8月21日