Never stop learning—the moment you think you know everything is the moment you start falling behind.

生命中最美的事物是免费的。

缺席往往比在场更有力量。

If you don't take risks, you'll always work for someone who does.

忠于自己，永远不要为任何人牺牲自己。

过去总是紧张的，未来是完美的。

系统辨识的挑战不仅在于拟合数据，还在于提取有意义且可推广的模型。