Just like in our, this Krsna consciousness movement, the movement, all the activities, they are not material. They're all spiritual. But still, because it is being enacted in the material world, we have also so much anxiety because we are in the material world, although that anxiety also bhakti. That is nothing else. That is not material. When we are anxious how to protect a property, how to push on this movement, how people will take it, what line of action we shall take, this is also anxiety, but that anxiety is for Krsna. Therefore it is bhakti.
Lecture on Bhagavad-Gita 16.11-12, Hawaii, 7 February, 1975