Obsession with customer delight, and obsession with early and frequent delivery of value

The core of Agile can be summed up or seen as two views complementing each other -- obsession with customer & customer delight, and obsession with early and frequent delivery of value. Everything else, even the last 2 that Stephen Denning proposes (Law of Network and Law of small team are mere enablers to these two) are very critical but in my view enablers.