It's hard to find opportunities for this outside college. Most people are not interested in intellectual talk, so the question is how to meet like-minded folks

It's hard to find opportunities for this outside college. Most people are not interested in intellectual talk, so the question is how to meet like-minded folks? I can't seem to find better alternatives to universities, for both number and diversity of opportunities. Book clubs seem like the best option but are often too narrowly focused on literature.