unoia:

A I R

Air is the element of freedom.The Air Nomads detached themselves from worldly problems and concerns; finding peace and freedom was the key to solving their difficulties in life. Airbenders continually sought spiritual enlightenment, and, as a result, all children born into the Air Nomads were benders. The first airbenders learned their art from the flying bison.

[WATER] [EARTH] [FIRE]