Evanescence is the quality of some people'Where have you disappeared as the horns of donkey evanesced?' It is an adage that is often used about someone, especially, any friend when he is evanesced for a long time. It does not mean that he got evanescent somewhere like Griffin, a singular scientist, in Footprints without feet, an essay of H.G.Wells.
Another proverb is coming to my mind- 'being a moon of the Eid' is attributed to someone who appears out of thin air after a long time. Such proverbs pop up in a friend circle but I think our elected people who represent us in parliament and assemblies are aptly entitled to such proverbs. They stoop before people and meekly show themselves as servants to all, even to down and out and they bend over backwards. But what an irony that the same meekly servants vanish somewhere without informing their masters. Quite interestingly, the subject is subject, they never fly off the handle.