This collection published by Editorial Katatay, «Onetti out of his mind», carried out by the researchers Teresa Basile and Enrique Foffani, gathers a group of essays that aims to represent the work of the Uruguayan writer taking into account its relationship with other artistic expressions: music, painting, cinema, similarities with other poetic works from Rio de la Plata or unaddressed issues such as old age or gender paradigms. An unlikely Onetti that exceeds the sphere of previous studies and delivers unexpected new readings. This article about Onetti out of his mind deals with all the aspects taking as a thread the different traditions that use of the expression ‘out of his mind’ throughout time.