Dirk Jan Struik (September 30, 1894 – October 21, 2000) was a Dutch-born American (since 1934) mathematician, historian of mathematics and Marxian theoretician who spent most of his life in the U.S. Life Dirk Jan Struik was born in 1894 in Rotterdam, Netherlands, as a teacher's son. He attended the Hogere Burgerschool nl (HBS) over there. It was in this school that he was first introduced to left-wing politics and socialism by one of his teachers, called Mister van Dam. In 1912 Struik entered the University of Leiden, where he showed great interest in mathematics and physics, influenced by the eminent professors Paul Ehrenfest and Hendrik Lorentz. In 1917 he worked as a high school mathematics teacher for a while, after which he worked as a research assistant for J.A. Schouten. It was during this period that he developed his doctoral dissertation, "The Application of Tensor Methods to Riemannian Manifolds." In 1922 Struik obtained his doctorate in mathematics from University of Leiden. He was appointed to a teaching position at University of Utrecht in 1923. The same year he married Saly Ruth Ramler, a Czech mathematician with a doctorate from the Charles University of Prague. In 1924, funded by a Rockefeller fellowship, Struik traveled to Rome to collaborate with the Italian mathematician Tullio Levi-Civita. It was in Rome that Struik first developed a keen interest in the history of mathematics. In 1925, thanks to an extension of his fellowship, Struik went to Göttingen to work with Richard Courant compiling Felix Klein's lectures on the history of 19th-century mathematics. He also started researching Renaissance mathematics at this time. He also rekindled interest in a mistake that Aristotle made about tiling the universe with just the tetrahedron. It was first challenged in 1435. In 1926 Struik was offered positions both at the Moscow State University and the Massachusetts Institute of Technology. He decided to accept the latter, where he spent the rest of his academic career. He collaborated with Norbert Wiener on differential geometry, while continuing his research on the history of mathematics. He was made full professor at MIT in 1940. Struik was a steadfast Marxist. Having joined the Communist Party of the Netherlands in 1919, he remained a Party member his entire life. When asked, upon the occasion of his 100th birthday, how he managed to pen peer-reviewed journal articles at such an advanced age, Struik replied blithely that he