"[T]he computer program is defined purely syntactically [= "formally"]. But thinking is more than just a matter of manipulating meaningless symbols, it involves meaningful semantic contents." (p. 36)

"If it is really a computer, its operations have to be defined syntactically [= "formally"], whereas consciousness, thoughts, feelings, emotions, and the rest of it involve more than a syntax. Those features, by definition, the computer is unable to duplicate however powerful may be its ability to simulate. (p.37)

In a slogan: "Syntax is not sufficient for semantics." (p. 39)