Yasujiro Ozu's 1953 drama Tokyo Story is principally about the slow march toward the future. Things change, and the sooner you accept that, the better. That's not to say that Ozu doesn't think one should hold on to the past, but just don't be controlled by it.
But theme is only the half of it with this incredibly realistic portrait of a multi-generational family. Well, at least more realistic feeling than that last portrait of a Japanese family we watched.