Free thought and Free speech

I think that free thought and free speech are different. Free thought is having the freedom to think about whatever you want but free speech means you have the freedom to say whatever you want. You could think about something but never actually say or do it. Just because you think something doesn't mean it will ever leave your mouth, but thoughts turn into words which leads to actions. That is why in 1984 the party doesn't want people to think because they don't want their thoughts to turn into actions but there isn't really a way to make someone not be able to think. Yes you could manipulate them into thinking what you want them to think but they will always have the ability and freedoms to think. With speech you might not always have the freedom to say whatever you want.