Guggenheim Museum in New York, there’s one little picture that got me through a tough winter: a watercolor in frosted blues, by the Dutch artist Piet Mondrian, of a solitary flower. It’s ...

He was a member of the De Stijl movement, which included notable peers such as Piet Mondrian, Theo van Doesburg, Piet Zwart, and Gerrit Rietveld. Born in 1884 in Budapest, Hungary, he later moved to ...