"How people are around a director, it really does affect everything, every detail of the life of the movie"

This quote by Daniel Day-Lewis speaks to the significance of the director's role in the filmmaking process. He is highlighting that the way individuals interact with the director has a direct impact on the entire production. The director is the leader of the team and sets the tone for the entire project. If the director is respected and supported by the cast and crew, the production will run more efficiently and completion result will be of higher quality. On the other hand, if the director is not appreciated or supported, the production will suffer and completion result will be of lower quality. Day-Lewis is emphasizing the importance of the director's function in the filmmaking procedure and how the people around them can impact the entire life of the motion picture.