Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it. Niels Bohr
Niels Henrik David Bohr (Danish: ; 7 October 1885 – 18 November 1962) was a Danish physicist who made foundational contributions to understanding atomic structure and quantum theory, for which he received the Nobel Prize in Physics in 1922. Bohr was also a philosopher and a promoter of scientific research.