(Sektion 213: Philosophische Untersuchungen von Ludwig Wittgenstein).
213. "But this beginning part of the series can obviously be interpreted in different ways (for example by an algebraic expression) and you must therefore first choose one such interpretation.--Not at all! A doubt was possible in some circumstances. But that does not say that I have doubted or even could doubt. (There is something to be said, that is connected to this, about the psychological 'atmosphere' of a process.)
Can, now, intuition raise this doubt?--If it is an inner voice,--how do I know how I should follow it? And how do I know that it doesn't mislead me? For, if it can lead me correctly, then it can also mislead me.
((Intuition an unnecessary subterfuge.))