The centralized building, the church which develops uniformly in all directions from a vertical central axis, was the ideal of Renaissance architects.
The centralized building is not an invention of the 15th century. This genre had been in use since the early Christian classical period, even if relatively rarely.
One of the tasls of the basilica was to guide the faithful to the altar, which is most often positioned in the east, while the former enter the space of the church from the west. Centralized composition negates this spatial tendency. In a centralized building, human beings perceive themselves at the center of surrounding beauty which is composed according to human measures.