The Disappearing Spoon: a science history podcast with Sam Kean · Sam Kean, Bleav

The Sad Story of Darwin’s Self-Procleimed “Stupidest” Child

April 22, 2025·19 min·1 clip
Leonard Darwin believed 'a man who can earn and keep money shows he has the qualities essential to survival,' dismissing artists and philosophers as sentimental nonsense.
This episode tells the tragic story of Leonard Darwin, the least accomplished son of Charles Darwin, who spent his life feeling inadequate in his brilliant family. His insecurities eventually led him to embrace eugenics as a way to honor his father's legacy, becoming president of the British Eugenics Society and promoting flawed, class-biased ideas about human 'fitness.' The narrative explores how even well-meaning individuals from good families can be seduced by dangerous ideologies.

As heard by us

Leonard Darwin's family inheritance becomes a study of how heredity hardened into eugenic public life.

Leonard Darwin enters the story as a 12-year-old newly at school, already aware that other children are whispering about his father's controversial book.

Read the full review in PlayNext →

Why you'd press play

You get a half-crown wager that opens onto Leonard Darwin's grim turn toward eugenics.

Read the full recommendation in PlayNext →
Listen to the show on