This is the best news the German people have heard since 1945. But it's right to look back: at the huge, artfully built frontiers of wire and lights, towers and minefields, dogs tethered to wires, sensor devices and mantrap guns, sanded death-strips, helmeted men with guns. There, on the border or the Berlin Wall, hundreds of human beings died and hundreds were maimed. The dogs howled in the night. Sometimes there would be detonations, and then the screaming which might be human or might be a roe deer blown in half by a mine. That is what is over now.
When the Berlin Wall was built in 1961, the East Germans claimed that by sealing the Berlin border they had saved the peace. Then as now, the outrush of people to the West was threatening to bring about the collapse of the East German state, but in an utterly different world. It was the world of Nikita Khrushchev, and that collapse would have brought the two superpowers into violent collision. Now that reasoning sounds like a bad dream. It is by opening the borders, not by closing them, that the East German regime tries to avert collapse. And the man in the Kremlin is Mikhail Gorbachev, not the man who screamed at capitalism: 'We will bury you!'
But, of course, the East German leaders are still playing games. Their move is both desperate and shrewd. Egon Krenz can live with two possible results of what he has now done. The first is a colossal bolt to the West, which would make the inrush of the last months just a prelude. If that happens, the Bonn government is trapped. West Germany cannot assimilate a far greater inflow. Instead, Bonn would be driven to provide the GDR with instant and enormous economic assistance and political encouragement - to make it a country worth staying in. It would mean, in effect, committing West Germany to Mr Krenz and his reforms. And that Mr Krenz well knows.
The other outcome could be that the population, seeing one of its biggest grievances met, will begin to simmer down. There would be a temporary increase of emigration to the West but then the torrent would slow. This too would be agreeable for Mr Krenz.
It is certainly true that many of these refugees - perhaps most - would return home if their country was more free and its borders remained open.
Heimat has a far deeper pull on the Germans than on the British. The trouble here is about freedom. Mr Krenz is gambling that his subjects will now go home and start planning foreign holidays. But the people are on the move, the biggest spontaneous movement of Germans since the 1918 revolution. They want a change not of rules but of regime.
For the moment, the Wall and the wire stand. But poets often see farther than politicians. Hans-Magnus Enzensberger, in a book published last month in London, predicted the Berlin Wall as a picturesque relic running through a reunited city. Its remains would be coveted by developers but fiercely defended by ecologists and heritage buffs. And, sure enough, last night the physical division of Germany began to turn into history.