enough is enough

phrase2

1. •
   One should be satisfied; nothing additional is required.

   • Here is enough, I am satisfied, (sayd he). / Since enough is enough, (sayd I), here may we / With that one word take end good, as may be geast: / For folke say, enough is as good as a feast. — 1546
2. •
   Especially as an expression of exasperation: the limit of patience or tolerance has been reached.

   • With every new indignity served upon the United States by the fanatical Fidel Castro comes an immediate, and lasting, impulse to declare that enough is enough. — 1961