there is no such thing as a stupid question

there is no such thing as a stupid question

Any question you might have is valid and worth asking, no matter how simple or stupid it may seem to you or other people. Please remember that everyone in this room has varying levels of familiarity with the subject matter, so what may seem basic to you might be very confusing to someone else. There's no such thing as a stupid question in this class, OK? Please don't be shy if you need help with something. There's no such thing as a stupid question.
See also: no, question, stupid, such, there, thing
Farlex Dictionary of Idioms.

There’s no such thing as a stupid question

and TNSTAASQ
sent. & comp. abb. Go ahead and ask your question without referring to it as stupid. There’s no such thing as a stupid question. But keep trying, you’re getting close.
See also: no, question, stupid, such, thing
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • TNSTAASQ
  • silly
  • McFly
  • get stupid drunk
  • stupehead
  • cluck
  • kluck
  • stupe
  • stoop