charlie: also one of the interesting people from silicon valley, ben horowitz from the firm andreessen horowitz. >> when we were entrepreneurs, we always felt that the best companies, including our own, were the ones run by the inventer, the people who started by the company and venture capital, at the time, was set up for the opposite. the inventer would invent and get it to a certain point then you bring in the adults who knew how to build a business. >> charlie: david brooks and ben horowitz next. >> there's a saying around here: you stand behind what you say. around here, we don't make excuses, we make commitments. and when you can't live up to them, you own up and make it right. some people think the kind of accountability that thrives on so many streets in this country has gone missing in the places where it's needed most. but i know you'll still find it, when you know where to look. captioning sponsored by rose communications from our studios in new york city, this is charlie rose. >> charlie: david brooks is here, he is an op-ed columnist at the "new york times" and a regular contributo