Griffiths, PhillipPhillipGriffiths2020-03-092020-03-092020https://hdl.handle.net/20.500.12111/7885Clay Lecture given at the Isaac Newton Institute for Mathematical Sciences, Cambridge, UKClay Lecture, based on joint work with Mark Green, Radu Laza, and Colleen Robles. Some of the lecture draws work of and discussions with Marco Fanciosi, Rita Pardini, and Sonke Rollenske.en-USHodge TheoryModuliLecture/speech