"if they get smarter than us, which seems quite likely, and they have goals of their own, which seems quite likely, they may well develop the goal of taking control..."
It was Science Fiction at the time, but not so much now.
"“Believe nothing merely because you have been told it. Do not believe what your teacher tells you merely out of respect for the teacher. But whatsoever, after due examination and analysis, you find to be kind, conducive to the good, the benefit, the welfare of all beings - that doctrine believe and cling to, and take it as your guide.” ~ Gautama Siddhartha — The Buddha
Any sufficiently advanced evil is indistinguishable from stupidity. ~ Unk (Paraphrase of Clarke's 3rd Law: "Any sufficiently advanced technology is indistinguishable from magic.")