Scott Bellware:
I think that the difference between a good developer and an excellent developer is the excellent developer's willingness to not know, an openness to explore, and faith in skills that guide solutions to good ends even when the end is not known at the outset.
Oren Ellenbogen:
Agile is a constant thinking about how we, AS A TEAM, can produce working features to our users with high quality within a short time-frame.