Citizen University · CC BY 3.0

Proposed the theory of multiple intelligences in his 1983 book Frames of Mind, arguing against a single measure of intelligence and reshaping how educators think about ability and teaching. A founding member of Harvard Project Zero in 1967, he led the research center for decades and has written more than thirty books, translated into over thirty languages. He later co-directed The Good Project, studying what makes work ethical and meaningful.