Quick feedback should be the first thing you introduce.
It is important that instead of the process being adopted it is adapted.
Starting with really short cycles seems to help implement the change to an agile process. If the cycles are short it is very difficult for the whole team to fall back into its old habits.
Learning and change processes are part of each other. Change is a learning process and learning is a change process.
Every agile process contains the following subtle steps
(1) reflection (awareness)
A plan is nothing; planning is everything. [Eisenhower]
If a project is on time and in budget it doesn't mean it was a successful project, but a successful estimate.
Methodologies do not produce skilled developers.
Stability is more negative than it is thought to be. [To stabilize something is to kill it]
A book is always a prevented dialogue.