Yves Klein is one of the most extraordinary and influential figures in post-war avant-garde art. In less than a decade - up until his untimely death in 1962 - he forged a career and built up a body of work that together have influenced and inspired contemporaries and subsequent generations of artists worldwide. Klein sought in his art to liberate the senses, to heighten our sensibility and to intensify our experience of life. In this comprehensive review of his art and ideas, Sidra Stich examines the full range of his diverse creative output - his paintings and sculptures, installations, meticulously documented performances, his copious writings, and his proposals and drawings for visionary projects - and sets them within the context of the art of the time to assess Klein's originality and his legacy.