Wow that's strange, I thought if you can read it you can speak it. I can speak it but I can't read.
Well, not really, it makes sense. You can read by knowing what each symbol looks and sounds like, but to speak it you have to be able understand the words that the sounds represent. Someone has to teach you the meanings to speak it, a lot of non-arabic people don't know the meanings and just make their kids learn the sounds of the arabic alphabet etc.