Eugene P. Wigner was born in Budapest in the fall of 1902. The celebration of his centenary is planned by the American Physical Society, by the European Physical Society, and by the Hungarian Academy as well. Wigner was schooled in Hungary. In the 1920s he played prominent role in developing quantum mechanics, which revolutionized modern science and technology. This is why Wigner received the Nobel Prize. In the 1930s he moved to Princeton (U.S.A.), and developed among others the theory of semiconductors. He was one of the pioneers of nuclear theory. In the 1940s in the framework of the Manhattan Project he designed the first water cooled high power nuclear reactors, which was acknowledged by high American governmental awards. He received also the "Atoms for Peace" prize of the United Nations. He was member of several academies (in the U.S. and Hungary as well). This book describes the atmosphere of the scientific revolution of the 20th century. It describes the changes having happened in Central-Europe, which developed the foresights of the Central-European (Hungarian) emigrants. The character and achievements of Wigner can be understood in this framework. The authors are physics professors. They also present the essence of scientific and technological discoveries and developments that E. P. Wigner achieved.