An excellent story with a profound lesson:

Another, deeper reason Gage will probably always be with us is that, despite all that remains murky and obscure, his life did hint at something important: The brain and mind are one. As one neuroscientist writes, “beneath the tall tales and fish stories, a basic truth embedded in Gage’s story has played a tremendous role in shaping modern neuroscience: that the brain is the physical manifestation of the personality and sense of self.” That’s a profound idea, and it was Phineas Gage who pointed us toward that truth.