“When I found I had crossed dat line (to freedom), I looked at my hands to see if I was de same pusson. There was such a glory ober ebery ting, de sun came like goid through the trees, and ober the fields, and I felt like I was in heaben.” 

                                           - Harriet Tubman

 

Harriet Tubman was the leader of the 19th Century railroad, that was underground.  She led the slaves to freedom.  Her words spoke the light of day at the time.