what is the central idea of the chapter"The third level"?

The Third Level is a story about Charley, who appears to be a representative of the average man in the unhappy modern world. His hunt for the ‘third level’ is ‘a waking-dream wish fulfillment’ or a form of escape to the peaceful times of the 1890s. Moreover, the fact that he pursues a hobby is also indicative of his attempt to flee from the anxieties and insecurities of this world.