'Circle' was published at last [constructivist manifesto, in 1937 - with Naum Gabo, Ben Nicholson a. o.]. Mondrian has made his studio opposite so very beautiful, and his company was always inspiring, as it had been in Paris when we used to visit him. After a while he really seemed to our domestic scene. His studio and Ben's [the sculptor Ben Nicholson; Barbara was his wife then] were most austere, but my studio was a jumble of children, rocks, sculptures, trees, importunate flowers and washing.

p. 283 - "Barbara Hepworth, A Pictorial autobiography", New York, Praeger Publishers, 1970