That quote is from a gentlemen named Jocko Willink, who happens to be a highly decorated Navy SEAL. The name is probably not familiar to you unless you are either in the Spec Ops community or are a follower of Tim Ferriss' website "The Four Hour Workweek". Jocko wrote book, along with another SEAL (Leif Babin) titled "Extreme Ownership: How U.S. Navy SEALs Lead and Win".
Jocko is an intimidating looking (and sounding) guy and has been known to tap out twenty guys on a regular basis during a BJJ workout. He has also proven himself in the field by leading one of the most highly decorated Special Operations units in the Iraqi War. He has taken those experiences and used them to build a rock solid leadership and management philosophy. Even if you are not in management, but find yourself in a leadership position on occasion, you will benefit from the lessons in the book. Even if you aren't interested in leadership theory, and you want to get some insight into what the war in Iraq is all about, then you will benefit from reading this book.
Take some time and check out the podcast on Tim Ferriss' website and you will hear Jocko tell about his time in Iraq, training with the SEALs, and his book. NOTE: this podcast is 2.5 hours long. I put it on while doing some research online and found myself stopping to listen and pay more attention on several occasions. I'm sure you will enjoy it as well.