Leopold Kronecker
Leopold Kronecker was a German mathematician who worked on number theory, algebra and logic. He criticized Cantors work on set theory, and was quoted by Weber as having said, Die ganzen Zahlen hat der liebe Gott gemacht, alles andere ist Menschenwerk . Kronecker was a student and lifelong friend of Ernst Kummer.
Leopold Kronecker was born onDecember 1823 in Liegnitz, Prussia in a wealthy Jewish family. His parents, Isidor and Johanna , took care of their childrens education and provided them with private tutoring at home Leopolds younger brother Hugo Kronecker would also follow a scientific path, later becoming a notable physiologist. Kronecker then went to the Liegnitz Gymnasium where he was interested in a wide range of topics including science, history and philosophy, while also practicing gymnastics and swimming. At the gymnasium he was taught by Ernst Kummer, who noticed and encouraged the boys interest in mathematics.
Source: Wikipedia