I don't give a damn if you're offended, I don't care.

The best picture books work on different levels for different ages.

数学不仅仅是一种工具；它是一种思维方式。

故事永远不会完成，只会被放弃。

The struggle itself towards the heights is enough to fill a man's heart. One must imagine Sisyphus happy.

译文：巧妙的如同车辕，笨拙的如同风筝。比喻各有其用。