In the beginning,
Man carried a fire torch
from cave to cave.
The magic of fire
gave Man dominion over all other
creatures (except dragons and Spanish flu).
Some say that it was Prometheus who taught mankind
the secret of how to make and keep wood in flames.
But that matters not because,
Man being the wise and sapien erectus that he is,
soon upgraded from his early torchwood to higher quality fuels:
(3) Whale oil
(4) Crude Oil
(5) Fracked Shale Oil and Gas
(6) Nuclear Fission and the evercoming Fusion
(z) Wiki list of energy sources