The surest way to prevent war is not to fear it.

The hard problem of consciousness is the problem of explaining how and why physical processes in the brain give rise to subjective experience.

We use mathematics to understand the markets, not to predict them.

季路问怎样侍奉鬼神，孔子说：“人都不能侍奉好，还谈什么侍奉鬼神？“请问死是怎么回事？“生都不了解，还谈什么了解死？”

出自《论语·公冶长》。做事情，一定要通过反复的思考，再去行动。