The Corruption Of Understanding Caused By Selfishness
by Philip Atkinson (May 2008)

Without an unselfish moral code the selfish are unable to:

These failure reveal the selfish are enemies of truth and incompetent: unable to solve problems.

The Extinction Of Genius
As Edward Gibbon noted in his History Of The Decline And Fall Of The Roman Empire, the decline of Rome was accompanied by a growth of immorality and the extinction of genius, for the inevitable result of immorality is the collapse of understanding.