Order & Proportion

These readings really got me thinking about the difference between order and proportion. Order can be seen as a prevailing course or arrangement of things and proportion as symmetry, harmony, or balance.
There are several different buildings that I think can compare these two aspects:

Michelangelo's Vatican Staircase

vs. 

Morphosis Cooper Union

One is very ordered and simple while the other appears more complicated and starts out wide and then becomes narrow.

Linder Athletic Center at the University of Cincinnati

vs.

Hearst Tower - Foster + Partners

One is made of concrete while the other has glass. Both have triangle windows.

Both of these of examples have a certain order to them and their proportions have to be just right for the building to work.