Indian Philosophy-Fire.

Agni implies ‘knowledge’ and Vritta 'darkness of ignorance'. Just as Agni destroys the darkness, in the same manner we should use 'the fire of knowledge' for the destruction of Kama lust, Krodh anger, Moha attachments and Ahamkaar arrogance, the inherent enemies of man. The fire of knowledge is capable of destroying these enemies. Ignorance darkness can be destroyed by knowledge of self.
Kindling the Fire is the religious rite when sandalwood and ghee interact with pran-vayu. The symbol of Fire is an equilateral triangle that represents three ingredients of Fire. These three ingredients sandalwood ghee and pran-vayu generate Agni.
The Agni, the Fire, so produced is the messenger between devotee and God.
Agni that is Fire-God, is second to Indra in the hierarchy of 33 koti Gods. He is equally the fire of the Sun, of lightning, in the havana-agni-kunda. As the divine personification of the fire of sacrifice, he is the mouth of the God, the carrier of the oblation, and the messenger between the human and the divine orders. In the Rig-Veda he is identified with Rudra.
Fire is ever-young, because the fire is re-lit every day, yet he is immortal. Fire is also linked to the Sun Mars, and with the south-east direction.
Agnihotri Brahman households today maintain a sacred fire for the worship of Agni. Ancient Romans kept a holy perpetual fire and transported the sacred fire of Hestia during migrations. The Zoroastrians of Iran placed fire at the centre of their religion and worshiped it.
Aristotle, declared fire, along with water, earth, and air, to be one of the four general and essential elements of life and of all things. Plato asserted that God used the four elements in the creation of the world. Heraclitus attributed to fire the essential force for creation.
Fire worship continues to be practiced among the Parsi in Agyaree temples the sacred fire is maintained by a priest using sandalwood, while his mouth is bound with a purifying shawl.