"I love people who make me laugh. I honestly think it's the thing I like most, to laugh. It cures a multitude of ills. It's probably the most important thing in a person."

What she’s really saying is that laughter isn’t just “fun”, it’s medicine. Audrey Hepburn is pointing to that friend who can make you laugh even when you’re exhausted, stressed, or heartbroken. The bills are still there, the problem isn’t magically solved, but for a moment your chest feels lighter and you can breathe again.
We sometimes chase impressive qualities in people; success, looks, status but she’s reminding us that the ability to laugh together might matter more. Think about the people you love being around: chances are, they’re the ones you can be silly with, who turn awkward moments into shared jokes. Laughter doesn’t erase life’s problems, but it makes them feel survivable, and that’s a quiet kind of magic.