The streets were dark with something more than night.
"The truth is rarely pure and never simple."
自适应控制是关于实时调整控制器参数以应对系统动态变化的方法。
"The only true voyage of discovery, the only fountain of Eternal Youth, would be not to visit strange lands but to possess other eyes, to behold the universe through the eyes of another, of a hundred others, to behold the hundred universes that each of them beholds."
Leadership is about making tough decisions today that will benefit generations to come.
"The biggest risk is not taking any risk."