ignorance of the law excuses no one

ignorance of the law excuses no one

One can still be held liable for breaking a law, even if they didn't know they were doing so at the time. I know you didn't think you were doing anything seriously wrong, but that defense won't hold up in court. Ignorance of the law excuses no one.
See also: excuse, ignorance, law, no, of, one
Farlex Dictionary of Idioms.
See also:
  • didn't exchange more than three words with
  • didn't exchange more than three words with (one)
  • come down hard on (someone or something)
  • come down hard on someone
  • (my) mama didn't raise no dummy
  • be hard on (one)
  • be hard on somebody
  • (my) momma didn't raise no dummy
  • I didn't (quite) catch that (last) remark
  • I didn't catch that remark. and I didn't get that.; I didn't hear you