What is integrity?

I recently came across this definition of integrity, which I would like to share. It was quoted in The Myth of the Rational Market by Justin Fox (details can be found in my reading list) and attributed  Landmark Education.

Being "in integrity" means "honoring your word" which means you:

• Keep your commitments and promises on time or

• When you have failed to keep a commitment or promise you:

• Acknowledge that failure as soon as your realize it

• And clean up any mess you created for those who were counting on your commitments and promises.