To this military attitude of the soul we give the name of Heroism... It is a self-trust which slights the restraints of prudence, in the plenitude of its energy and power to repair the harms it may suffer. The hero is a mind of such balance that no disturbances can shake his will.
Ralph Waldo Emerson (2012). “The Selected Works of Ralph Waldo Emerson”, p.80, Graphic Arts Books