OHC 334.4
(Our High Calling 334.4)
It makes every difference what we give our minds and souls to feed upon. We can let our minds dwell upon romance and castle-building, and what will it do for us? It will ruin us, soul and body.... We want to have that power that will enable us to close our eyes to scenes that are not elevating, that are not ennobling, that will not purify and refine us; and to keep our ears closed to everything that is forbidden in God′s Word. He forbids us to imagine evil, to speak evil, and even to think evil.... (OHC 334.4) 2 I MC VC