Form ever follows function.
A proper building grows naturally, logically, and poetically out of all its conditions.
But the building's identity resided in the ornament.
Every building is like a person. Single and unrepeatable.
Happiness and depression cannot blossom on the same vine. Some people affirm their woes and beg for sympathy. Others, unfortunately, cast gloom wherever they go. These poor souls were born sick and tired.
Once you learn to look at architecture not merely as an art more or less well or more or less badly done, but as a social manifestation, the critical eye becomes clairvoyant.