My piece of advice for a Saturday (or any day): Hang out with people who are intelligent, but not jerks. You can find them. I did last night. We discussed books, movies, and more.
If you do find yourself among jerks (even intelligent ones), just get up and leave. You won't change their minds about anything, and they'll just bring you down. You might pick up some useful information, but useful information presented in a hurtful way is ultimately not useful. Find another group.
Don't be intimidated if you're talking with people (no jerks this time) who are smarter, more well-read than you. You're going to learn. You're going to grow. You're also going to contribute something of value, if not at this meeting, perhaps the next one.
Full disclosure: When you hang out with intelligent people, time will fly by, leaving you yearning for more such conversations. This is how we grow. This is how we care about one another. This is how we build community. This is how we thrive.
Image from About Her