How does the philosophical problem about mental processes and states and about behaviorism arise? — The first step is the one that altogether escapes notice. We talk of processes and states and leave their nature undecided. Sometime perhaps we shall know more about them — we think. But that is just what commits us to a particular way of looking at this matter. For we have a definite concept of what it means to know a process better. (The decisive movement in the conjuring trick has been made, and it is the very one that we thought quite innocent.)

— Ludwig Wittgenstein, Philosophical Investigations (§ 308)