Sofia Kovalevskaya — Russian Mathematician born on January 15, 1850, died on February 10, 1891

Sofia Vasilyevna Kovalevskaya was the first major Russian female mathematician, responsible for important original contributions to analysis, partial differential equations and mechanics, and the first woman appointed to a full professorship in Northern Europe. She was also one of the first women to work for a scientific journal as an editor... (wikipedia)

Many who have had an opportunity of knowing any more about mathematics confuse it with arithmetic, and consider it an arid science. In reality, however, it is a science which requires a great amount of imagination.
It is impossible to be a mathematician without being a poet in soul.
Say what you know, do what you must, come what may.