"It was the spirit animating the mass and flowing from it, and it expressed the individuality of the building"

This quote by Louis Sullivan speaks with the concept that a building is more than just a physical structure. It is a living, breathing entity that is animated by the spirit of individuals who populate it. The spirit of individuals is what gives the developing its individuality and makes it unique. Sullivan is recommending that the spirit of the people is what gives the developing its character and makes it stand out from other structures. He is emphasizing the importance of individuals in producing a building that is genuinely special and distinct. The spirit of individuals is what makes a structure come alive and offers it its own personality. Sullivan's quote is a pointer that a structure is more than simply a physical structure, however a living, breathing entity that is shaped by the individuals who populate it.