Why do you think so? Show me your logic behind this.The chances of their being a god are no greater than those in favour of there being a tooth fairy. Why do you think otherwise ?
And I'd agree with him; the universe does seem to operate like a machine, in terms of what it is made up of (atoms) and the forces that govern it.When Newton discovered the laws of motion and universal gravitation it could have been construed as machine like. An excerpt from wikipedia:
"Although the laws of motion and universal gravitation became Newton's best-known discoveries, he warned against using them to view the universe as a mere machine, as if akin to a great clock. He said, "Gravity explains the motions of the planets, but it cannot explain who set the planets in motion. God governs all things and knows all that is or can be done.""
Of course, God is the best engineer you'll ever meet!
Remember Newton had more brainpower then probably the whole of this community combined.