作家的角色是作为一个见证者，为那些不能为自己发声的人发声。
The role of the writer is to be a witness, to give voice to those who cannot speak for themselves.
To do mathematics is to engage in an act of creation and discovery simultaneously.
有机体感知的不是刺激，而是环境中的物体。
规模和价值效应在不同市场和时间段普遍存在，但其幅度可能有显著差异。
The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.