Jaakko Hintikka

Kaarlo Jaakko Juhani Hintikka (January 12, 1929 – August 12, 2015) was a Finnish philosopher and logician, one of the most significant of the 20th century. He was born in Helsingin maalaiskunta (now Vantaa).
After teaching for a number of years at Florida State University, Stanford, University of Helsinki, and the Academy of Finland, he ended his career as a Professor of Philosophy at Boston University. He wrote 30 books and over 300 scholarly articles. Hintikka worked in mathematical logic, philosophical logic, the philosophy of mathematics, epistemology, language theory, and the philosophy of science.