I spend a lot of time thinking and making sure I have enough time and different inputs to make that the primary source of fulfillment in my life. An input might be a book or a cultural event, an online news source, a song or tune. It might be a good conversation. I make sure my life is never particularly busy or scheduled so if I have a thought I want to explore it's not too much hassle to jot it down somewhere and explore it later that day (or at worst, later that week). I arrange my life around these two goals.
I'm pretty hard-nosed *for* science (was a researcher), and spirituality is not my thing. We can get all the wonder and beauty we need through science, art, and philosophy. I won't usually confront people about it unless they're waving their beliefs around like a flag (and even then I *usually* won't, because I'm not much for confrontation), but I think religion and spirituality are ridiculous. They sometimes are pretty interesting though, and the philosophy and music they inspire can be pretty cool even given the bollocks foundations.
INT(J/P). Lots of emphasis on the introversion - if I'm around a lot of people one day, I'll be taking long walks in the park or reading quietly for the next few days. I also don't make new friends very often/easily.
Once I'm comfortable conversing with someone, I talk a lot. I have a lot of opinions and stances, I judge people on theirs, and I expect them to judge me on mine.