The Essence of Agile is joy.
The joy of discovery, the joy of learning, the joy of insight.
Joy is something that is experienced but difficult to describe. It feels like an creative unleashing of our human spirit.
Watch Dan Ingalls describe Smalltalk, the creative learning language that transformed the computer industry. This is a man filled with joy.
Watch the eyes of a student that just completed a difficult but meaningful learning challenge. That is where the magic is. When they sparkle, you know that something amazing just happened.
That what the Essence of Agile is all about.