Works of geniuses?

Some books leave me in awe of author’s intelligence and I feel smarter after finishing them. Please recommend me books that made you feel similarly.

Life: A User’s Manual by Perec, Crime and Punishment by Dostoyevsky, Ficciones by Borges, The Dispossessed by Ursula Le Guin, Parable of the Sower by Octavia Butler, Karla Trilogy by Le Carre and Pale Fire Nabokov have been such books for me and I would love to hear your suggestions.

by DawkinsSon