 Speech acts are thus also to be distinguished from performatives. ‘Performative’ is another technical term, and as used here it refers in the first instance to a kind of sentence. A performative sentence is in the first person, present tense, indicative mood, active voice, that describes its speaker as performing a speech act. ‘I assert that George is the culprit,’ is a performative sentence by this test. As we have seen, one can perform a speech act without uttering a performative. Further, since it is merely a type of sentence, one can utter a performative without performing a speech act. For instance, while talking in my sleep I might say, “I hereby promise to climb the Eiffel Tower,” without thereby making any promise. We may also define a performative utterance as an utterance of a performative sentence that is also a speech act.[4]