Whether it is in literature, in cinema or in video games studies, the critic is often represented as a parasite. Austere, smug and frustrated, he is that shadowy figure who judges and moralizes the others’ work at dusk. However the etymology of the word reminds us that this profession does not consist in destroying the work of others but in analyzing it. “To criticize” means “to discern, to separate, to sort“. Thus the purpose of the critic is to select some characteristics of a cultural event in order to dissect it, “to sieve” it, as its Greek etymology indicates, and to give an analysis of it. For the theatre critic in particular, his goal consists in translating the experience of the stage into words. Between immediate aesthetic pleasure and rational distance, he has to decode what he has understood, seen and felt during a performance into a limited number of words.