Interestingly, this picture somehow reminds me of the vital lesson I have had picked up from the Leadershift video of author-filmmaker-futurist Joel Arthur Barker: 

A leader is someone who people will follow to places they would not go alone. 

Using the bridge building metaphor, he sums up that:

The 21st century leader will build bridges built of hopes, ideas and opportunities - bridges that help people move from where they are to where they need to be.