Albert Einstein was born in Germany, on March 14, 1879. He grew up in Germany, Italy, and Switzerland. Einstein taught himself Geometry(几何) when he was 12 years old. He graduated from college in 1900. From 1902 to 1907, Einstein worked as a clerk in the office in Switzerland. His job left him plenty of time to think.

    Isaac Newton was born in England, on December 25, 1642. He was not a good student. His mother took him out of school so that he could help her with the family farm. Newton did not like farming. He liked to read and study on his own. A teacher knew that Newton was very smart and helped him go to the University of Cambridge.

    After Newton graduated he went back to the family farm for two years. He came up with many of his greatest ideas from 1665 to 1667 while he was alone in the countryside.

    Marie Curie was born in Poland in 1867. Though Marie was very good in school, no university in Poland at that time accepted female students. In 1891, Marie traveled to Paris, France. She attended the Sorbonne, a famous college in Paris. Marie studied Physics and Maths and graduated at the top of her class! She also met a French chemist named Pierre Curie. They married in 1895.