If architecture had nothing to do with art, it would be astonishingly easy to build houses, but the architect's task - his most difficult task - is always that of selecting.

In addressing a task, one almost always has several possible options, sometimes only a few, and they may all be practical and functional. But they lack the aesthetic aspect that raises it to architecture.

If a building becomes architecture, then it is art.

Proportions are what makes the old Greek temples classic in their beauty. They are like huge blocks, from which the air has been literally hewn out between the columns.

The primary factor is proportions.