Synthesized answer
The provided passages do not contain enough information to explain the key concepts of "Notes from Underground" in my own words. The passages only provide the title of the work and a list of other works by Fyodor Dostoevsky, without offering any details about the content or themes of "Notes from Underground." Therefore, I cannot explain the key concepts based on the given text.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Dostoyevsky. Notes From Underground / White Nights / The Dream of a Ridiculous Man / Selections from The House of the Dead by Фёдор Михайлович Достоевский