Quote of the day
The dependence of one people upon another, even for the benefits of legislation, is the deepest source of national weakness.
Sofia Kovalevskaya
Born: January 15, 1850
Died: February 10, 1891 (aged 41)
Bio: Sofia Vasilyevna Kovalevskaya, born Sofia Vasilyevna Korvin-Krukovskaya, was a Russian mathematician who made noteworthy contributions to analysis, partial differential equations and mechanics.