Niels Bohr
Niels Henrik David Bohr (7 October 1885 – 18 November 1962) was a Danish physicist who made foundational contributions to understanding atomic structure and quantum mechanics, for which he received the Nobel Prize in Physics in 1922.
Bohr was also a philosopher and a promoter of scientific research. In 1943, having a Jewish mother, he fled to Sweden to escape Nazi-persecution and successfully pleaded to the Swedish king to allow refuge to all the 8,000 Danish Jews he fled with.