Traditionally, love is seen as a profound and enduring connection. Yet, as Lacan and Deleuze describe, love is also a mad compulsion where we throw ourselves repeatedly against the wall between self and other. Insofar as love is necessary, Sinan Richards writes, it lies in identifying and seeking this madness in each other, and embracing imperfection.

While writing The Dialectics of Love in Sartre and Lacan, I was living and teaching in Paris and would often travel to London by train to see friends and family. On one such trip, I was asked by a British Border Force agent at St Pancras International: 'What is it that you do, then?' When I explained that I was working on a book on Jean-Paul Sartre and Jacques Lacan and how love was impossible, the border guard retorted scornfully, 'That’s the problem with you academics – you spend so much time thinking that you can’t get on with it.' This exchange still makes me chuckle, because, although rude, what if he was right?