A hero is a man who consistently violates the law of conservation of energy.

Related:

• Nature abhors a hero. For one thing, he violates the law of conservation of energy.
  For another, how can it be the survival of the fittest...
• You can't fight the law of conservation of energy. You can bargain with it,
  but you can't fight it. -- Solomon...
• Nature abhors a hero. --
  Solomon...
• The total amount of energy in the universe is constant.
  The Law Conservation of Energy -- Dr. John...
• Murphy's Law is always a good excuse. --
  Solomon...