Constantin Brâncuși was a Romanian sculptor who made his career in France and pioneered modernist sculpture. He is known for his abstract, clean geometric forms that emphasized the essence of his subjects over physical details. Some of his most famous works include Bird in Space, The Kiss, and The Column of the Infinite. Brâncuși's sculptures broke records at auction, with pieces from his Bird in Space series selling for over $27 million. He is considered one of the most influential sculptors of the 20th century.