“Sometimes people ask us, ‘Why are you utilizing material products if you condemn the advancement of material civilization?’ But actually we do not condemn. We simply ask people to do whatever they are doing in Krishna consciousness. This is the same principle on which, in the Bhagavad-gita, Krishna advised Arjuna to utilize his fighting abilities in devotional service.” (Shrila Prabhupada, The Nectar of Devotion, Ch 14)