He who labors works for himself, for his mouth craves it from him.
All the labor of man is for his mouth, and yet the appetite is not filled.
In all labor there is gain, but the talk of the lips tends only to poverty.
If you are wise, you shall be wise for yourself; but if you scorn, you alone shall bear it.
There is a way that seems right to a man, but the end of it is the ways of death.
An ungodly man plots evil, and his lips are like a burning fire.