Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do. ...

Never worry about theory as long as the machinery does what it's supposed to do. (Robert A. Heinlein)

Robert A. Heinlein Quotes Pictures

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.

Robert A. Heinlein Quotes: Never worry about theory as long as the machinery does what it's supposed to do.