"I love acting with kids, cause they're great acting partners. They're totally present. Even when they're acting, they're still available and you can crack them up or something weird will happen and they'll go with it"

Mark Ruffalo is expressing his appreciation for dealing with children in this quote. He finds them to be great acting partners due to the fact that they are constantly present and readily available. They are open to attempting new things and going with the flow of the scene. He also finds them to be entertaining, as they can be easily made to laugh or surprise him with their reactions. This quote reveals that Ruffalo has a fantastic respect for children and their capability to act. He discovers them to be trusted and imaginative, which makes them great partners to work with. He also finds them to be enjoyable and amusing, which makes the experience of showing them enjoyable.