In their field they [mathematicians] do what we ought to be doing in ours. Therein lies the significant lesson … of their existence. They are an anal… - Robert Musil

To pass freely through open doors, it is necessary to respect the fact that they have solid frames. This principle, by which the old professor had always lived is simply a requisite of the sense of reality. But if there is a sense of reality, and no one will doubt that it has its justification for existing, then there must also be something we can call a sense of possibility. Whoever has it does not say, for instance: Here this or that has happened, will happen, must happen; but he invents: Here this or that might, could, or ought to happen. If he is told that something is the way it is, he will think: Well, it could probably just as well be otherwise. So the sense of possibility could be defined outright as the ability to conceive of everything there might be just as well, and to attach no more importance to what is than to what is not.

Wir haben nicht zuviel Verstand und zu wenig Seele, sondern wir haben zu wenig Verstand in den Fragen der Seele.

I am not only convinced that what I say is false, but also that what one might say against it is false. Despite this, one must begin to talk about it. In such a case the truth lies not in the middle, but rather all around, like a sack, which, with each new opinion one stuffs into it, changes its form, and becomes more and more firm.