Are children only motivated by reward and punishment?

Have you managed to find a way to discipline your child without using these two opposites?

I’m not sure how you can motivate a child to become a “good” person without using one of these two or both?
If you take them away what other devices are left?

Does it have to come down to good and evil? Or can we find a better way?

Or do you not believe in discipline at all and let your child do what they want?

NB: I don’t really want this to turn into a spanking debate… I’d like to focus more on the philosophy of the problem itself…thanks