One who knows not what his rights are can never know when they are taken and is unable to defend them. He is like a man who believes he owns a piece of ground which his neighbor also claims, but he doesn't know its boundaries. The neighbor continues to encroach further and further onto land he suspects is his, but since he is never certain where the boundary is, he cannot check the advance. Until he takes a firm position and says: "this far and no further," there is no line.