Albert Einstein was born to a middle-class German Jewish family. His parents were concerned that he scarcely talked until the age of three, but he was not so much a backward as a quiet child. He would build tall houses of cards and hated playing soldier. At the age of twelve he was fascinated by a geometry book. At the age of fifteen Albert quit high school disgusted by rote learning and martinet teachers, and followed his family to Italy where they had moved their failing electrotechnical business. After half a year of wandering and loafing, he attended a congenial Swiss school. The next year he entered the Federal Institute of Technology in Zurich.