Cities are a stage where life is played out.

We are going to die, and that makes us the lucky ones. Most people are never going to die because they are never going to be born.

Learning is essentially a matter of stimulus-response connections.

科学是通过证据追求真理。

出自《论语·公冶长》。做事情，一定要通过反复的思考，再去行动。