What is Lloyd Blankfein even saying here?

http://www.bloomberg.com/news/2014-05-16/blankfein-sees-guilty-plea-by-global-bank-as-cause-for-concern.html

“There’s concern being shown, and I don’t magnify it, but I don’t minimize it either,” “You hope it’s not existential, and you hope there’s not a knock-on effect to that.” “For us, it’s not just a question of what’s in our economic interest; we have a role in the system, and for us to not deal with someone would be a further risk to the system,” Blankfein said. “It becomes a very weighty decision for us to cut someone off, and we wouldn’t do it lightly.” “There’s interest, curiosity, concern about what if it gets to the next layer or the next layer or the next layer of sanctions; what are the consequences of that?” “People transact, and no one can ever understand the full integration and the full knock-on effects of pulling a thread out.”