The word yoga is derived from the Sanskrit verb yuj
meaning bind, join, unite, control.
It is allied to the English word yoke, the German joch,
and the Latin jungo (I join).
Yoga thus literally means union and control.
It signifies the union of man with God,
of the individual with the universal reality,
of each with the All of existence.
It means union of the mortal with the eternal.
It implies union of the mind with the inmost centre
of one's own being, the self or atman -
union of the conscious mind
with the deeper levels of the unconscious -
resulting in the integration of personality.
-Haridas Chaudhuri