Who said, "You never know a person until you've lived with them"?The quote is attributed to whom?

Expert Answers
enotechris eNotes educator| Certified Educator

Apparently, no one knows.  An amusing modern version follows:

There's an old Irish saying: "You don't know someone until you've lived with them." That warning goes double for traveling with them and quadruple for traveling on a sailboat with them.

  ...who knows if the original quote was either old or Irish?

serendipity1098 | Student

I think it's Atticus from  - To Kill a Mockingbird -