A good architecture is consistent in the sense that, given a partial knowledge of the system, one can predict the remainder.
Fred Brooks The Design of Design
Fred Brooks is well known for The Mythical Man-Month, but his newer book The Design of Design is also worth reading. He takes general design principles and applies them to computer software, computer hardware, buildings large and small, aeroplanes, bridges and more.
One of the main themes of The Mythical Man-Month is conceptual integrity. He carries this drumbeat over to The Design of Design and explores it some more. For my own part, there is a joy in being able to predict where something is in a system, or what it’s called, because of the consistency running through the system.