Charles Petzold

The real question is not whether machines think but whether humans do.

From The Annotated Turing

A computer is a universal machine.

From The Annotated Turing

The relationship between computation and logic is profound.

From The Annotated Turing

Understanding algorithms is essential to understanding the nature of computation.

From The Annotated Turing

Any computation can be performed by a Turing machine.

From The Annotated Turing

The limits of computation are defined by the Turing machine.

From The Annotated Turing

Computers don't think, they process.

From The Annotated Turing

The concept of 'computability' helps us to understand what can and cannot be computed.

From The Annotated Turing

Computers do not think; they merely execute instructions.

From The Annotated Turing

A computer program is a precise set of instructions that a machine can follow.

From The Annotated Turing