The book "*Hartung: a constant storm*" focuses on the artist **Hans Hartung** and his artistic career. Key themes and topics include:
- **Abstract Art and Related Movements:** Hartung's work is rooted in **Tachisme**, a European form of **Abstract Expressionism**, and explores various abstract art tendencies 【1】【2】.
- **Artistic Evolution and Retrospective:** The book covers works spanning nearly seven decades of Hartung’s career (1922-1989), highlighting his consistent interests and continuous innovation 【3】【4】.
- **Formal Elements in Art:** Recurring interests in his work include **figure-ground play**, **contrasts of light**, and the **effects of energy as light, shadow, and space** 【5】.
- **Philosophical Approach to Art:** His work is described as having a "philosophical cynicism" and an indifference to traditional themes and images, emphasizing formal aspects 【6】.
- **Context of Post-War Painting:** Hartung's art is situated within the broader context of post-war painting and its various abstract tendencies 【1】.