Why risk your life?

Why might someone like Harriet Tubman, who was already free, risk her life to lead other people to freedom?
There can be lots of reasons for a free woman like Harriet Tubman to risk her life and freedom inorder to lead others to freedom. There can be a lot of explanations. But what occured to me as the main center reason for Harriet Tubman to outbeat her fears and help others, had something to do with her personality. And what character traits is that? Well, I would say a strong sense of right and wrong, sympathy and courage is what had lead her bacl to the land of slavery. Where she had to face the possibility of being captured for every single day. Why? you may ask. Well, that is an excellent question. I suppose it is because of her own sympathy and old compasion towards her old homeland and friends. So as she enjoyed her freedom, she will always thought of her poor brothers and sisters back at her homeland being tourtured to death, yet still have never yet tasted the wonderful taste of freedom. While she, having full knowledge of how wrong slavery stood in the fresh air of freedom, looking at her fellow family and friends suffocate in the water of isolation. Bound by the manacles of slavery. How can she bare through that? There must have been something that she can do. And the solution she came up with for saving black slaves were constructing the undergound railroad. Which helps the slaves to freedom. In conclusion, Harriet Tubman helped the slaves because of her sympathy, guilt, her sense of right and wrong, but mostly her love and compassion to all African Americans. That is what drove her forward, she is risking everything she had for others, and all attanding one purpose: To gain freedom. They will do everything they can to fight their harsh condition, for the sake of freedom.