Dangerous Types Of People - Vengeance, Touchy

http://48laws-of-power.blogspot.in/2011/05/law-19-know-who-youre-dealing-with-do.html

A book that might be interesting: Disorders of Personality: Introducing a DSM/ICD Spectrum from Normal to Abnormal

 By Theodore Millon

Melacholy: http://fivetemperaments.weebly.com/melancholy.html