Fire is the power to transform solids into liquids, to gas, and back again. In other words, it possess power to transform the state of any substance. Within our bodies, the fire or energy binds the atoms together. Fire transforms food into energy. It creates the impulses of nervous reactions, our feelings, and even our thought processes.
Fire is considered a form without substance.
Air is the gaseous form of matter which is mobile and dynamic. It is a key element required for fire to burn. Air is existence without form. Ether is the space in which everything happens. It is the field that is simultaneously the source of all matter and the space in which it exists.