Here is a simple Karmic truth.
Many people think that spirituality and materialism are poles apart.
But Lord Krishna in the Gita has given a way to make them both the same!
He asks us to perform karma yoga, so that our worldly work will continue on, as the body continues doing all the necessary actions.
And the mind? The mind is attached to God, because all work is done as a service to Him, and hence no karma is accrued.
Thus spirituality = materialism!