Latin Everyday

This is less about latin, but more about the roots of word in general. No language came out of nowhere is what we usually think. This is wrong, latin came from another language, and that from another language, and so on and so forth, until we have the first language. My question is, do we still have any words that have roots from that language. We most likely do not. It would be amazing if we do. Imagine, we have this root that is from a word that is as old as written language as itself, maybe older than the oldest written thing we know of. This would be amazing. There is one thing that interest me more than that is this. Have we gone back in linguistics, as in is there a language in the world that is more like it than any other language. Obviously there is, but what language is almost exactly like it. That's all I have to say.