It's never too early to teach those things.

Found in a Xiamen Middle School. Many thanks to Tuy.

It surely is.

This is not about the song.

Maybe.

This file is to be seen on a large construction wall surrounding Shanghai's 人民广场 People's Square in late April 2005.

I won't enter.

Thanks to Christian Goedel.

We all do.

Thanks to Ken Rahn from Rhode Island.

I am glad you are.

Thanks again to Patricia from 北京 Beijing.