1.
Agile is an attitude, not a technique with boundaries. An attitude has no boundaries, so we wouldn't ask 'can I use agile here', but rather 'how would I act in the agile way here?' or 'how agile can we be, here?'
Alistair Cockburn
3.
Focusing on skills, communications, and community allows the project to be more effective and more agile than focusing on processes and plans.
Alistair Cockburn