
“Always measure opportunities lost.”
Source: Rotberg, Eugene. (2009). ** “A 40-Year Retrospective.” In Grumpy Old Bankers: Wisdom from Crises Past (pp. 80-83). Tonbridge, Kent: Centre for the Study of Financial Innovation." https://static1.squarespace.com/static/54d620fce4b049bf4cd5be9b/t/55351f89e4b0995b98f45d11/1429544841321/Grumpy+Old+Bankers%2C+wisdom+from+crises+past.pdf