This isn't what I took away from it. It's basically your environment really dictates a lot of who you are and what you become. From my experience, this is absolutely the case.
Your environment during your early formative years, yes. By the time you're in your mid-late teens, your moral reasoning is already pretty much solidified (and really it's more about clan loyalty than morality at that point - although we often conflate the two when it comes to inter-clan conflict).
Maybe in an ideal world, but in practically any real world scenario this isn't the case. Spend enough time somewhere and the mechanics of that place inevitably influence the way we act, in the workforce and out.