The sister pact
Growing up without a lot of money was often a trouble for the Curies. Both Marie and her sister, Bronya wished to get a good education that would send them far in life. But, without the money, this took some major effort. Marie and Bronya decided to make a sister pact. They made a plan that said while Marie worked as a governess, earning money, Bronya would continue with her medical studies. Once Bronya had a job, Marie would continue on with her education. This was able to happen due to the fact that the money they each received from their jobs would be spent to send the other to school. Marie made money for Bronya to go to school and once Bronya had a job, she made money for Marie to go to school. Without this sister pact, who knows how far either of them would have gotten?