What you forgot to mention was that he also stated that.... We should retreat even if from our own houses... So a burglar breaks into my house and endangers my family and it is MY duty to retreat? What the heck kind of pretzel logic is that??
If you read the quote, he was stating that outside of your home, you have the duty to retreat, if safely possible. He wasn't saying that you should run from your home in the course of a home invasion.
"There has always been a legal defense for using deadly force if — and the 'if' is important — if no safe retreat is available. But we must examine laws that take this further by eliminating the common sense and age-old requirement that people who feel threatened have a duty to retreat, outside their home, if they can do so safely."