If we don't change direction, we'll end up where we're headed.

You don't write because you want to say something, you write because you have something to say.

Simple can be harder than complex: You have to work hard to get your thinking clean to make it simple.

人总是比他对自己所知道的要多。

有了实际工作，宝宝的自我意识就会逐渐发展、强化。