Olivia Cole

Seeking forgiveness for gluttony, sloth and other deadly sins

The neurologist Guy Leschziner explores the medical conditions that might underlie extremes of human behaviour in a fascinating study that combines biology and psychology

A sufferer from Huntington’s disease (right) with a volunteer at a specialty care community in Robinson, Minnesota, USA. The disease, with its debilitating apathy, is discussed by Guy Leschziner in a chapter on ‘sloth’. [©Leila Navidi/Minneapolis Star Tribune/Alamy] 
issue 30 November 2024

Professor Guy Leschziner writes that he was raised in a secular household that was ‘entirely irreligious’ yet with ‘a strong sense of morality, of right and wrong’. As an eminent neurologist and a rational atheist, it’s striking that his study of the extremes of human behaviour should reach for such Biblical terms. Is there an element of ghoulishness here? Seven Deadly Sins has a structure of which David Fincher, director of the gruesome film Seven, might approve. 

To zero in on the sins is undoubtedly a darkly entertaining approach, if not for the squeamish. Having been a consultant at Guy’s hospital for more than 25 years, Leschziner has seen ‘the full spectrum of human morality’: inexplicable altruism, generosity, kindness, love. The woman who donates a kidney to a complete stranger; the kind Samaritan diving into the murky waters of the Thames to save a drowning man. On the other hand, this is work that if you were to take it home with you on a daily basis would be the stuff of nightmares:

Unspeakable cruelty, sloth and gluttony.

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