Ludwig Wittgenstein, Philosophical Remarks, ed. Rush Rhees, trs. Hargreaves and White, Chicago 1975, p. 83:
52. It's strange that in ordinary life we are not troubled by the feeling that the phenomenon is slipping away from us, the constant flux of appearance, but only when we philosophize. This indicates that what is in question here is an idea suggested by a misapplication of our language.
This indicates to me that Wittgenstein lacked a metaphysical sensibility. It is precisely in ordinary life, and prior to his occupation with technical metaphysics, that the metaphysician feels and is saddened by the transitoriness of things, the flux of phenomena, the passage of time. That feeling is part of what sets him on the path of technical metaphysics in the first place. It is the fundamental sense of the transience and unreality of this world that disposes him to take seriously metaphysical writings when he first encounters them. And it is the lack of this sense in G. E. Moore and in Wittgenstein which disposes them to be puzzled by the writings of metaphysicians like Bradley and McTaggart and to set out to debunk them either by defending common sense (as if the metaphysician were simply denying it) or by bringing us back to ordinary language used in ordinary ways.
Wittgenstein says that "only when we philosophize" are we troubled by the flux of phenomena. Not only is this plainly false, it suggests that there is something aberrant rather than natural about philosophizing, as if philosophy were a disease of cognition needing treatment rather than refutation. I simply deny this. If there is a cognitive defect, it is in those who fail to perceive the relative unreality of the transient.
Philosophy arises quite naturally in people of a reflective disposition who have a sense of the relative unreality, the ontological non-ultimacy, of the world of time and change. Philosophy is not a disease, but a response to the inherent questionableness of the world and our lives in it. In the Theaetetus, Plato speaks of wonder as the "feeling of the philosopher." This wonder is not mere puzzlement induced by linguistic confusion but a questioning elicited by the nature of things, a questioning that is a transcending of this world, a transcending that issues in attempts to put into language the essence of the world.
It is the possibility of this transcending that Wittgenstein questions. He questions it by questioning the meaningfulness of the sorts of extended uses of ordinary words that the metaphysician employs. The metaphysician takes a word like 'present' from ordinary usage and then says something extraordinary like, 'The present alone is real,' or 'Only the present experience has reality.' Wittgenstein objects to this with a sort of Contrast Argument:
We are tempted to say: only the experience of the present moment has reality. And then the first reply must be: As opposed to what? Does it imply that I didn't get up this morning? (For if so, it would be dubious.) But this is not what we mean. Does it mean that an event that I'm not remembering at this instant didn't occur? Not that either. (85)
Wittgenstein's point is that when one says that the present alone is real, one is using 'present' in an extended sense, one in which it no longer contrasts with 'past' and 'future.' He seems to think that the presentist metaphysician is saying something that conflicts with such obvious facts as that one got up in the morning. But here is where Wittgenstein's Contrast Argument becomes hard to credit. Wittgenstein's mistake is to think that when the presentist, saying that the present alone is real, implies that the past is unreal, he is implying that the past is nothing at all in a way that would render it false that we got up this morning. But of course the presentist does not deny the gross facts; what he does is reinterpret them. His point is something like this: the reality of the past is relative to, or derivative from, the (absolute) reality of the present.