From Longman Dictionary of Contemporary Englishthere’s no such person/thing etc as somebody/somethingthere’s no such person/thing etc as somebody/somethingEXISTused to say that a particular person or thing does not exist There’s no such thing as magic. → such
Examples from the Corpus
there’s no such person/thing etc as somebody/something• He says there's no such thing as a citizens arrest.• Raymond runs the exclusive Manoir aux Quat Saisons in Wheatley, where there's no such thing as a free lunch.• To the professionals who work with troubled couples, however, there's no such thing as the wronged spouse. 