Description:
We should always keep ourselves bright, shiny and spotless, like a new mirror. This is not an easy thing to do; we may shine a mirror very carefully and find that we have missed a spot; or, we find that, within a few hours, dust and dirt have undone our work.
https://sanantoniofamilykarate.wordpress.com/2015/06/22/a-bright-mirror-calmly-reflects-the-world-but-is-not-changed-by-it/