Inner Space Philosophy is both a work of original philosophy and an entertainment package, since Tartaglia believes imaginative presentation to be a crucial feature of our philosophical traditions, one which has been neglected to our detriment in the drive to model philosophy on science. Arguing for the utmost importance of philosophy to the human future, such that we must eventually become 'a philosophical people', Tartaglia discusses topics such as the meaning of life, idealism, materialism, determinism, video games and existential threats. These discussions transpire through ethereal encounters with philosophers from throughout world history, some from the distant future and prehistoric past, as well as a cosmic battle between 'Lady Luck', 'Fate' and 'Philosophy', and a biography of Gambo Lai Lai the Cynic, a philosopher from Trinidad who flourished during the golden age of calypso music. This is a book which amazes, challenges and provokes deep reflection in equal measure.