"One can never be happy by identifying himself with the material body and engaging in all kinds of nonsensical activities. For happiness, there must be consciousness of Krishna; that is the difference between spiritualism and materialism. The same typewriter, dictation machine, tape recorder, mimeograph machine, paper, ink, the same hand -- on the surface, everything is the same, but everything becomes spiritualized when it is used in the service of Krishna. This, then, is spiritual. We should not think that something has to be uncommon to be spiritual. The entire material world can be transformed into spirit if we simply become Krishna conscious. By ardently following the instructions of Krishna in Bhagavad-gita and following in the footsteps of the great acaryas, teachers of Bhagavad-gita in the line of disciplic succession, we can spiritualize the earth and restore its inhabitants to sanity."