Our stony hearts

The 2021 archive

David Wahl

Created in 2021

What if the latest scientific discovery revealed unexpected and poetic ties between mineral species and biological ecosystems?

Our stony hearts, David Wahl et Olivier de Sagazan, 2021 © Christophe Raynaud de Lage / Festival d'Avignon


In the 17th century, Pierre Borel, an ordinary doctor, declares having found irrefutable proof of the sexuality of stones. This debate, which raged throughout the Grand Siècle, pits two sides against each other: those who believe Earth to be inert against those who see it as a living organism. What echo does this have today, taking into account all our scientific knowledge? Are stone and flesh closer than we think?

Born in the Congo in 1959, Olivier de Sagazan studied biology before turning to painting and sculpting. For over twenty years, he has developed a hybrid practice which mixes painting, sculpting, and performance.

After graduating from the Conservatoire national supérieur d’art dramatique, Gaëlle Hausermann worked as an actress for the theatre, cinema, and television. She has been working with David Wahl for several years.


Conception and interpretation David Wahl and Olivier de Sagazan
Text David Wahl
Stage direction Gaëlle Hausermann

General stage management Anne Wagner
Direction déléguée Incipit Mariène Affou
Diffusion Anne-Sophie Boulan


Production Incipit
Co-production SACD, Festival d’Avignon, Le Quartz – Scène nationale de Brest, Théâtre du Champ au Roy (Guingamp)
With the help of the city of Brest, the Région Bretagne, the Conseil départemental du Finistère
With the support of the Centquatre-Paris

David Wahl is an associate artist at Océanopolis – Centre for scientific and technical culture dedicated to the ocean (Brest)




Press conference - 6 July

  • Press conference
With Christiane Jatahy, Grégoire Korganow, Joanne Leighton, Agnès Troly and Angélica Liddell

The 2021 archive