"I'm not under too much of an illusion of how smart or un-smart I am because filmmaking ultimately is about teamwork"

This quote by Guy Ritchie speaks with the value of cooperation in filmmaking. He is stressing that specific intelligence is not the only factor that contributes to the success of a movie. Rather, it is the cumulative effort of the whole team that makes a film successful. He is recommending that it is not required to have an inflated sense of one's own intelligence in order to make an excellent film. Rather, it is the collective effort of the group that is most important. This quote is a pointer that filmmaking is a collective process and that the success of a movie depends on the collective effort of the whole team. It is a reminder that private intelligence is not the only aspect that contributes to the success of a movie.