Explain the quote " How easily people forget the food their spirit body needs and are made slaves to the the powers that feed their earth bodies"

I think that the quote is worded in a bit of an awkward
way.  I have never heard of it exactly, but I think that its intent is fairly powerful. 
The idea of "food" for the "spirit body" or the soul is something that is transcendent. 
It is not contingent on present setting and something that is universal.  Yet, we, as
human beings, have a tendency to focus on the present and the contingent.  In this
concentration and obsession, there is a loss of the transcendence.  It is within this
idea that the second half of the quote holds meaning when it suggests that being chained
to the transient and the contextual demands of consciousness allows individual to lose
sight to what is important.  In our tendency to become slaves to "the powers that feed
earth bodies," we tend to sacrifice that which is for the soul and that which is
meaningful and important.  It is this balance and recognition of such values and to
minimize being enslaved that becomes so very important to the nature of human
consciousness.