The expressive side of abstract painting, as it unfolded in Switzerland and throughout Western Europe in the post-war years, has long awaited a publication that places this art movement at its center. This gap is now set to be filled by this noteworthy new release. With its rich imagery, it allows for the rediscovery of remarkable Swiss artists who often worked abroad. The contributions of numerous art historians succeed in revealing entirely new aspects of a culturally rich era. Switzerland engaged with the French and American avant-gardes through its artists and collectors, as well as its museums and private galleries. The competition between geometric and expressive abstraction, as well as the innovators of figurative painting, was unmistakably shaped by debates.