If you can't view the video below, click here.
Sachs makes two points:
1) Power and wealth means people are more likely to cheat to hold onto it or grow it. He cites a study, amongst others, that demonstrates this tendency.
2) Wall Street titans still don't really understand what they did wrong.
Technology and accountability driven by transparency may help with the first issue.
On the second, only showing these kinds of people the real life consequences of their actions will make a difference, given regulation won't do it.
A role for someone such as Bill Clinton etc.
Here's the three minute video: