The central piers were left in their places; the three terminal apses of the choir and transepts were strengthened, simplified, reduced to commonplace.

Bramante's ground-plan is lucid, luminous, and exquisitely ordered in its intricacy.

The true creation of a builder-poet's brain, it illustrates Leo Battista Alberti's definition of the charm of architecture, _tutta quella musica_, that melody and music of a graceful edifice.

We are able to understand what Michelangelo meant when he remarked that all subsequent designers, by departing from it, had gone wrong.

Raffaello's plan, if carried out, would have been monotonous and tame inside and out.
After the death of Raffaello in 1520, Baldassare Peruzzi was appointed to be Sangallo's colleague.