Beliefs/values/dreams/experiences/wishes/fears? I'll never make the first move. Talking about my personal values and beliefs is uncomfortable because I don't find that I can translate them into anything meaningful outside of the context of my own mind. I usually avoid bringing up my opinions because nine times out of then, the other party gets flippant or emotional (often because my opinions are so unemotional) and it's difficult to have any sort of debate, so I wait for them to offer their side first and try to anticipate how reasonably they'd react to my own. If I think they will respond reasonably and I respect them, I'll share, but I dislike talking about myself in general.
I'm liable to ramble about my interests, but it quickly becomes a conversation about the interest and nothing to do with me whatsoever.