from Tom Stoppard's play Travesties, which imagines a fictional meeting of Tristan Tzara (a founder of the Dada movement in art), James Joyce (author of Ulysses and A Portrait Of The Artist As A Young Man), and Lenin (the Russian Revolutionary), as well as a minor functionary at the British Consulate named Henry Carr, who all happened in real life to be living in Zurich, Switzerland, in 1917 during WWI. This exchange occurs in Act One (on p. 38-39 of the hardcover edition).

TZARA: Doing the things by which is meant Art is no longer considered the proper concern of the artist. In fact it is frowned upon. Nowadays, an artist is someone who makes art mean the things he does. A man may be an artist by exhibiting his hindquarters. He may be a poet by drawing words out of a hat. In fact some of my best poems have been drawn out of my hat which I afterwards exhibited to general acclaim at the Dada Gallery in Bahnhofstrasse.

CARR: But that is simply to change the meaning of the word Art.

TZARA: I see I have made myself clear.

CARR: Then you are not actually an artist at all?

TZARA: On the contrary. I have just told you I am.

CARR: But that does not make you an artist. An artist is someone who is gifted in some way that enables him to do something more or less well which can only be done badly or not at all by someone who is not thus gifted. If there is any point in using language at all it is that a word is taken to stand for a particular fact or idea and not for other facts or ideas. I might claim to be able to fly... Lo, I say, I am flying. But you are not propelling yourself about while suspended in the air, someone may point out. Ah no, I reply, that is no longer considered the proper concern of people who can fly. In fact, it is frowned upon. Nowadays, a flyer never leaves the ground and wouldn't know how. I see, says my somewhat baffled interlocutor, so when you say you can fly you are using the word in a purely private sense. I see I have made myself clear, I say. Then, says this chap in some relief, you cannot actually fly after all? On the contrary, I say, I have just told you that I can. Don't you see my dear Tristan you are simply asking me to accept that the word Art means whatever you wish it to mean; but I do not accept it.