You don't mind if I ask a question regarding schizopherenia?

I believe my friend has the catatonic version, and his actions and thoughts seem out of sync with each other. What runs through a mind of a schizophernic? I know this seems like a general question, but I want to try to communicate with him better, for him respond to the world in a more coherent fashion, and convince him to take his meds without making him feel uncomfortable.