Critical, humanistic geography deals with senses and essences, and proposes a new society project which is certainly thrilling. However, it has to deal with institutional and scientific requirements that restrain its liberties. It is also undermined by some identity and recognition obsessions which are very much against its process. So, calling on the use of literary imagination developed by Yi-Fu Tuan, we had a close look at it, using science fiction in order to better understand its methodological difficulties, its social concerns and its research themes. Cognitive, critical, humanistic and libertarian, science fiction appears like a stimulant that can purge humanistic geography, and indeed transcent it.