Chassidus in general, and
Chabad Chassidus in particular, is an all-embracing
world outlook and way of life which sees the Jew's central purpose
as the unifying link between the Creator and Creation. The Jew is
a creature of "heaven" and of "earth,"of a heavenly
Divine soul, which is truly a part of G-dliness, clothed in an earthly
vessel constituted of a physical body and animal soul, whose purpose
is to realize the transcendency and unity of his nature, and of the
world in which he lives, within the absolute Unity of G-d.
The realization of this purpose entails a two-way correlation: one in the direction from above downward to earth; the other, from the earth upward. In fulfillment of the first, man draws holiness from the Divinely-given Torah and commandments, to permeate there with every phase of his daily life and his environment - his "share" in this world; in fulfillment of the second, man draws upon all the resources at his disposal, both created and man-made, as vehicles for his personal ascendancy and, with him, that of the surrounding world.
By the Lubavitcher Rebbe