发出履行性陈述并不是在做陈述，因此履行性陈述的发言既不真实也不虚假。
To utter a performative is not to make a statement， and therefore the utterance of a performative is neither true nor false.
Your most unhappy customers are your greatest source of learning.
当火药点燃的瞬间，时间就停止了。
La literatura es fuego; significa inconformismo y rebelión.
Our sweetest songs are those that tell of saddest thought.
