And whatever you select otherwise, definitely be sure to not miss Lem's "Golem XIV": Lectures by what nowadays is called an AGI to Humanity, short before that entity evolves to an even more advanced level - from which further communication with humans will no longer be possible, and that likely operates outside the physics known to us. Stunning, especially when considering it was written in 1973-1980. Seemingly, the English translation of Imaginary Magnitude contains Golem XIV in its entirety; in German and other languages it was published as a separate book.