In Greek the words for soul or spirit, _psuche_, _pneuma_, _thumos_, all are directly from verbal roots expressing the motion of the wind or the breath.

The Hebrew word _ruah_ is translated in the Old Testament sometimes by wind, sometimes by spirit, sometimes by breath.

Etymologically, in fact, ghosts and gusts, breaths and breezes, the Great Spirit and the Great Wind, are one and the same.

It is easy to guess the reason of this.

The soul is the life, the life is the breath.