// Workers AI · dad joke modeWhat did The Proof say to the drink? You're 100 proof I'm thirsty.

For other uses, see The Proof (disambiguation).

The Proof

Author	Agota Kristof
Original title	La Preuve
Language	French
Series	The Notebook Trilogy
Publisher	Éditions du Seuil
Publication date	1988

The Proof (French: La Preuve) is a novel by Agota Kristof published in 1988 by Éditions du Seuil. It constitutes the second volume of the "The Notebook Trilogy", the first volume being The Notebook and the trilogy ending with The Third Lie.

Summary

The second part of the story opens with Lucas's period of unease due to his separation from his twin brother Claus, with whom he was one. Several characters subsequently intervene in the story, including the stationer Victor, who sells his house and bookstore to Lucas and is later sentenced to death for strangling his sister Sophie; the librarian Clara, Lucas's lover and obsessed with the death of her husband Thomas; Peter, Lucas's close friend; and finally Mathias, a child born from an incestuous relationship between a woman and his father, who is deformed but possesses a keen intelligence. At the end of the story, the child takes his own life, tormented by his deformity, which, in his opinion, prevents him from being loved by Lucas as a son. The story ends with the return of twin Claus to his hometown, where he is missing his twin.

Audiobook

• Agota Kristof (2003). La Preuve (in French). Paris: éd. Livraphone. ISBN 978-2-87809-293-6.
• Agota Kristof (2004). La Preuve (in French). Paris: éd. Livraphone.