True Sustenance Is in Service

True sustenance is in service,
and through it a man or woman
reaches the eternal Brahman.
But those who do not seek to serve
are without a home in this world.
Arjuna, how can they be at home
in any world to come?

These offerings are born of work,
and each guides mankind
along a path to Brahman.
Understanding this, 
you will attain liberation.

The offering of wisdom is better
than any material offering, Arjuna;
for the goal of all work is spiritual wisdom.

Approach someone who has
realized the purpose of life
and question him with
reverence and devotion;
he will instruct you in this wisdom.
Once you attain it, you
will never again be deluded.
You will see all creatures in the Self,
and all in me.
— Bhagavad Gita
(From Sacred Jewels of Yoga)