Cranks, dreamers, weaklings, know-it-alls, or troublemakers (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. The consequences of so creative a disposition can be remarkable, and may, regrettably, often make what people admire seem wrong, and what is taboo permissible, or, also, make both a matter of indifference. Such possibilists are said to inhabit a more delicate medium, a hazy medium of mist, fantasy, daydreams, and the subjunctive mood. Children who show this tendency are dealt with firmly and warned that such persons are cranks, dreamers, weaklings, know-it-alls, or troublemakers.

Robert Musil, The Man Without Qualities