Today, when reading "The Story Of Mankind", I came across a sentence puzzling me a lot which is quoted as "Meanwhile youth, impatient of the slowness of progress, flocked to the universities, and thereby hangs a story." . But what does "hangs a story" excatly mean? Looking forward to your kind help!!!!!!!!!!!!!!!
To "hang" a story on something, is to use that thing to start the story.
To "hang" a painting, you need to put a nail into the wall, a secure place so the painting won't fall down.
To "hang" a story on something, it has to be a good "hook", to make you really want to hear the story.
My cousin went fishing, and came back without his watch, his wallet, or his shoes -- now there's a situation you can hang a story on!
In your example, the writer is emphasising the irony of people who are impatient, and wanting a lot of new things, going to university, a place which teaches about the past... and suggesting that to unravel that mystery would make a good story.