Beautiful
From APIDesign
The seek for beauty that drives most of us is related to Platón's heritage. Every science since then tries to be as beautiful as Platón's geometry.
Does beauty matter? Shall we seek for proper (e.g. rationalistic) solutions or it is enough to be satisfied with good results and something that (even without no clue) works?
These are important questions that shape and form The Art of Building Modern Software as also outlined in Chapter 1 of TheAPIBook.