Larkin said once that there are two types of poetry: the kind that tries to say something new, and the kind that tries to say something old in a new way. (He aimed for the latter.) It seems to me that all speech/writing/thought is like this. If you aren't saying something (that at least seems to you to be) new or putting an old idea in a new way then you aren't really saying anything at all. You are parroting others, being a mouthpiece for them.
Larkin's preference for new ways of putting old ideas is somewhat like Wittgenstein's ideas that more facts won't solve the big questions of life and that living longer (even forever) won't help make life meaningful either. What you need (if anything) is a new way to think of the facts or to talk about life, a new way to see or conceive of things. I think he takes it as given that it must be possible to live a meaningful life at all times, so, while culture or civilization might make a big difference to how you live, when you live is irrelevant to whether it's possible for you to live a good life. It always is possible. (And it's always possible to fail, too: nothing, like something, happens anywhere, as Larkin says.) But it takes imagination or a special kind of gift to express yourself in the right way. Which I think connects with this:
I think I summed up my attitude to philosophy when I said: Philosophy ought really to be written only as poetic composition. It must, as it seems to me, be possible to gather from this how far my thinking belongs to the present, future or past. For I was thereby revealing myself as someone who cannot do what he would like to be able to do.
(Ludwig Wittgenstein, Culture and Value, ed. G. H. von Wright (in collaboration with Heikki Nyman), trans. Peter Winch, Oxford, Basil Blackwell, 1980, p. 24e.)Midnight in Paris is about a man who cannot do what he would like to able to do, because he feels that he belongs to a different time and place (Paris in the 1920s). But then he finds a way to do it, so all ends well. It's not very deep (with possibly one exception, every character is two-dimensional), but it's optimistic and it looks nice.