Michaà  Wiszniewski (27 September 1794 â 22 December 1865) was a Polish philosopher, psychologist, and literary historian.
Wiszniewski graduated from the celebrated Krzemieniec Lyceum (secondary school), where he subsequently taught for a time.
In 1831 he became a professor at Kraków's Jagiellonian University. He was a conservative activist during the Kraków Uprising of 1846. In 1848 he emigrated to Italy.
Wiszniewski was an epigone of the Polish Enlightenment, and at the same time a precursor of Positivism.
He authored a pioneering book on Characters of Human Minds, which is regarded as the first Polish work in the field of psychology.