So Edward Krasiński described his 1964 performance Spear.

Krasiński (1925–2004) was one of the most important artists of the European post-war avant-garde, whose work ranged from sculptures to immersive installations. He sought to reduce sculpture to a mere line, best epitomised in his use of blue adhesive tape: ‘I place it horizontally at a height of 130cm everywhere and on everything.’ This included his Warsaw studio, which has been preserved as he left it.

Edward Krasiński, 'Spear' 1964
Edward Krasiński, 'Spear' 1964
Edward Krasiński, 'Spear' 1964
Edward Krasiński, 'Spear' 1964
Edward Krasiński, 'Spear' 1964
Edward Krasiński, 'Spear' 1964
Edward Krasiński, 'Spear' 1964
Edward Krasiński, 'Spear' 1964

Edward Krasiński’s performance Spear 1964, photographed by Eustachy Kossakowski
© Anka Ptaszkowska, courtesy Foksal Gallery Foundation