Politicians would be wise to remember that the spoken word is likened to a memorial tablet of their lips.
It is like an arrow shot from the bow - it cannot be withdrawn. Or, to cite another saying, once toothpaste is out of the tube, it is hard to push it back in.
Some political amateurs may think that the easiest way to popularity is to find fault and pitch one community against another.
But Confucius said: "A superior man puts rightness before courage. An inferior man who has courage but does not know rightness will become a trouble-maker."