What is energy? Pick up a physics text book, and look in the index for "Energy-definition of," and you'll find it nonexistant. Whatever it is, one thing we know about energy is that it is conserved. Why do we believe in it? No one has proved it. On the other hand, no one has been able to prove anything wrong with it. All we know is that it has always worked in every instance where it has been applied, and we are happy with it simply because it works. Why does it work? We haven't the faintest idea; it just happens. The conservation law is a description of how life works, not an explanation. Although we do not know why it works, we do know how it works.
MY TWISTED TALE OF LIFE
