The challenge in model checking is not just to find errors, but to understand why they occur.

Changing the destructive things you say to yourself when you experience the setbacks that life deals all of us is the central skill of optimism.

我永远不会停止创作，因为创作就是生命。

有的鸟终究是关不住的，因为他们的羽翼太过光辉，当他们飞走时，你会由衷的祝贺他们获享自由；然而无奈的是：你得继续在这无聊之地苟且偷生。