I used to have a perpetual inner monologue. Now I think in abstractions, patterns, and relationships. I verbalise them after "feeling them out" mentally. I might say a phrase or two to myself and I have found that language is more easily transmitted telepathically, but I have grown beyond language as a primary tool for comprehension. I also read a ton and I read pretty heady stuff so it's not like I'm losing my comprehension skills and, if anything, they have only increased.