The most effective debugging tool is still careful thought, coupled with judiciously placed print statements.

成为难民就是在别人的世界里成为一个低语。

"To write a biography is to walk in another's shoes, to see the world through their eyes."

你和我各有一个苹果，如果我们交换苹果的话，我们还是只有一个苹果。但当你和我各有一个想法，我们交换想法的话，我们就都有两个想法了。