"As iron has the power to burn when made red-hot in the association of fire, so the body, senses, living force, mind and intelligence, although merely lumps of matter, can function in their activities when infused with a particle of consciousness by the Supreme Personality of Godhead. As iron cannot burn unless heated by fire, the bodily senses cannot act unless favored by the Supreme Brahman."
https://vedy.online/en/sb6/16/24
