 More recently and to a still muted extent is the revival of interest in mid-20th century French thinker Raymond Ruyer, whose notion of survol or “self-survey” is mentioned by Deleuze and Guattari in their brief remarks on the consistency of the concept in its neural instantiation in What is Philosophy? (Deleuze and Guattari 1991 [1994, 210]). English translations of Ruyer’s works are Ruyer 2016 and 2018. Ruyer’s relation to Deleuze is explored in Bains 2002, Bogue 2009 and 2017, and Roffe 2017. Other treatments of Ruyer that are relevant would be Massumi 2014 and Grosz 2017.