István Bibó (7 August 1911, Budapest – 10 May 1979, Budapest) was a Hungarian lawyer, civil servant, politician and political theorist. During the Hungarian Revolution he acted as the Minister of State for the Hungarian National Government. When the Soviets invaded to crush the rebellious government, he was the last Minister left at his post in the Hungarian Parliament Building in Budapest. Rather than evacuate, he stayed in the building and wrote his famous proclamation, "For Freedom and Truth", as he awaited arrest.
Bibó was arrested on 23 May 1957 and sentenced to life imprisonment on 2 August 1958 but released in the 1963 amnesty.
More information on the English3 and Hungarian Wikipedia pages.