||This work is engaging in personality and opinions of an American neomarxistic economist Paul M. Sweezy. In the first part of my work, I am writing about the kinked demand curve, which was formulated for the first time by Paul Sweezy. Then I am dealing with Sweezy’s evaluation of socialism and how he dealt with development of socialism in socialistic countries. I put the main emphasis on interpretation of economic crisis, which he considers as a normal state of capitalism. In the end I’ll try to show, that Sweezy’s work is relevant, when explaining the origin of some problems of today’s economy.