Our courage is greater to dare a visible than an imagined danger. A visible danger rouses our energies to meet or avert it; a fancied peril appalls from its presenting nothing to be resisted. Thus, a panic is, usually, a sudden going over to the enemy of our imagination. All is then lost, for we have not only to fight against that enemy, but our imagination as well.
Panic is a sudden desertion of us, and a going over to the enemy of our imagination.