An iron pestle can be ground into a needle, but a wooden pestle can only be ground into a toothpick. If the material is not right, it will be useless no matter how hard you try.

Franklin said a very touching sentence. He said: "Wherever there is freedom, there is my motherland." This sentence was rewritten by Li Ao as "This is my country, and I want to make it Freedom.

Sometimes explanations are unnecessary - your enemies don’t believe your explanations, but your friends don’t need them.