When the legislative and executive powers are united in the same person， or in the same body of magistrates， there can be no liberty.

I’m not perfect, but I’m always me.

The only limit to our realization of tomorrow is our doubts of today.

人生短暂如梦，世事变化无常。

The challenge in computer graphics is to simulate the complexity of the real world with the simplicity of mathematical models.

The beauty of literature is that it allows us to live a thousand lives.