The following is an edited version of the address given in the NSA Auditorium in November as the feature of Security Week 1973.
PDF (4 Pages): Colby on Secrecy at NSA in 1973
EXTRACT
“We are all also aware of Gresham's law in economics, which says that bad money drives out good. If we overclassify, we develop in people's minds a contempt for the classification rules, for if some items that really are not secret at all are classified, it means the whole system is nonsense.”
