You are never too old to set another goal or to dream a new dream.
The best way to learn computer science is to do computer science.
反馈是一个强大的概念,在自然系统和技术系统中被广泛使用。
Man is not the creature of circumstances; circumstances are the creatures of men.
解释:善于制造弓箭的工匠之子,必须先从编织簸箕开始;善于冶炼的工匠之子,必须从连缀皮裘开始。
True progress happens when we dare to question the status quo.