Michael Portillo in his Irish railway series, in commenting on the Irish v British troubles in the early 20th c. commented on Q. Elizabeth II's visit to Ireland:
The beauty of time passing is that the makes the impossible possible.Now, where have I heard that error before?
To be accurate: the beauty of time passing is that the actors change, circumstances change, peoples' perceptions and motivations change and what was impossible in the past becomes, because of these social and political changes, possible.