The Sophists had this idea: Forget this idea of what's true or not—what you want to do is rhetoric; you want to be able to persuade the audience and have the audience think you're smart and cool. And Socrates and Plato, basically their whole idea is, "Bullshit. There is such a thing as truth, and it's not all just how to say what you say so that you get a good job or get laid, or whatever it is people think they want.
David Foster WallaceAnd make no mistake: irony tyrannizes us. The reason why our pervasive cultural irony is at once so powerful and so unsatisfying is that an ironist is impossible to pin down. All U.S. irony is based on an implicit "I don’t really mean what I’m saying." So what does irony as a cultural norm mean to say? That it’s impossible to mean what you say? That maybe it’s too bad it’s impossible, but wake up and smell the coffee already? Most likely, I think, today’s irony ends up saying: "How totally banal of you to ask what I really mean.
David Foster Wallace