Seek the truly practical material life
But seek it so that it does not numb you to the spirit.
Seek the spirit but seek it, not in passion for the super-sensible
But seek it because you wish to apply it selflessly in the practical world in the practical life.

Turn to the ancient principal,
Matter is never without spirit and spirit is never without matter
In such a way that we say
We will do all things in the light of the spirit,
And we will so seek that light of the spirit that it evokes warmth for us
in our practical activities.

Rudolf Steiner