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From Aristotle...
The concept of praxis is important in Marxist thought. In fact, philosophy of praxis was the name given to Marxism by nineteenth century socialist Antonio Labriola. Marx himself stated in his Theses on Feuerbach that “philosophers have only interpreted the world in various ways; the point is to change it.” Simply put, Marx felt that philosophy’s validity was in how it informed action.
Hungarian Marxist philosopher and literary critic Georg (or György) Lukács held that the task of political organisation is to establish professional discipline over everyday political praxis, consciously designing the form of mediation best suited to clear interactions between theory and practice.
As used by Brazilian educator and theorist of critical pedagogy Paulo Freire, praxis is a synthesis of theory and practice in which each informs the other. Praxis is also a dominant theme in the political philosophy of Helmut Fleisher.
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...to Tony Wilson
In the Channel Four television documentary New Order: Play At Home, Factory Records owner Tony Wilson describes praxis as “Doing something because you have the urge to do it, inventing the reasons later.” Elsewhere, Wilson has been quoted as saying “You learn why you do something by doing it. The Theory of Independence was discovered in the act of putting out your own records, doing very well, being friends with your artists and not ripping them off. And by 1981, we were all doing it.” Which perfectly sums up the Factory ethos.