[1] Kosáry was born in Selmecbánya (Banská Štiavnica) and opposed the German occupation and collaboration with Hungary during World War II.
[1] He lost influence in Hungary after the war due to the communist takeover of the country for being too "bourgeois".
[1] He was imprisoned for his opposition to communism following the failed Hungarian Revolution of 1956.
[1] Kosáry was unanimously elected president of the Hungarian Academy of Sciences (HAS) in 1990 and was re-elected to a second three-year term in 1993.
[1] He led the effort to introduce newer, more democratic bye laws at the Hungarian Academy of Sciences.