Happy birthday to Albert Einstein! Perhaps it is a commonplace, but he has been one of the greatest minds. His story is the story of how to change the rules and how to replace the ultimate grounds on which we stand when scrutinizing reality. Moreover, he has been one of the most prominent advocates of the realist standpoint in the philosophy of science. According to him, our theories should somehow be true in their abstraction. The Einstein-Bohr debate was the culminantion of the realist-instrumentalist opposition in the 20th century.