Where might he have learned that from?

From the World Bank Directors' Committee report into l'affaire Wolfowitz --

[paragraph 99] From the standpoint of internal governance, the [Wolfowitz] actions disturbed the internal system of checks and balances that are in place and act as safeguards ... it left only the Vice President for Human Resources to safeguard the interests of the institution, but he accommodated the wishes of the President.

Incidentally, the above quote is the essence of why today's Wall Street Journal editorial (subs. req'd; alt. free link) responding to the Bank report is so misleading. The Journal cites e-mails that the Bank's VP for Human Resources wrote to himself at the time of the Wolfie negotiations that make it sound like he approved of the deals [how did the WSJ get those e-mails?]. But this is precisely the report's critique of him ("accommodated the wishes of the President")-- and in any event Wolfie had prevented him from getting legal advice on the deals.