Every blank space is an opportunity to disrupt expectations.

A wise man said， “Before you speak， let your words pass through three gates. At the first gate， ask yourself， “Is it true？” At the second gate ask， “Is it necessary？” At the third gate ask， “Is it kind？”

煤炭的真正成本不仅在于价格，还在于我们如何管理其后果。