I am looking for a word to describe a person who is thought-full.
Quite literally, full of thoughts. I don't mean pensive because that
seems to imply that the thinking is only introspective. Rather, I am
interested in finding a term for someone who thinks about things on
his/her own but also engages in that thought process with others. I feel
that there must be a word out there for the kind of person who is
always discussing, considering, ruminating, engaging with questions
and thoughts. Any help?