Fiction:
A couple of sci-fi ones by a favourite author of mine, Kim Stanley Robinson:
'2312' (older classic - mystery-thriller set in our solar system) and
'Aurora' (more recent work tackling interstellar travel and colonization of new planets).
Non-Fiction
'How To Create a Mind' (Ray Kurzweil, Cognitive Science)
'Fooled by Randomness' and 'Black Swan' (2 classics on prediction and forecasting by Nassim Nicolas Taleb)
'Superforecasting' (highly cited classic on what makes a genius forecaster, by Philip Tetlock)
'Outliers' and 'Blink' (highly influential psychology classics on the nature of genius and intuition, respectively, by Malcom Gladwell)
'Thinking Fast and Slow' (psychology classic on the 2 main thinking styles, by Daniel Kahneman)
'From Bacteria To Bach and Back' (magnum opus by Dan Dennett, about the biological origins of consciousness)
'Sapiens' and 'Homo Deus' (recent much-talked about books on the history and future of humanity, respectively, by Yuval Noah Harari)
'Other Minds' (interesting marine- biology book on intelligence and consciousness in the Octopus, by Peter-Godfrey Smith)
'Time reborn' (popular physics - argues for the fundamental reality of time, by Lee Smolin)
Lots to get through