That goes back a long way, to the original four scientific elements (for the time) of earth, air, fire (remember the Phlogiston Theory?) and water. Five hundred years ago, your ideas would have made you an esteemed scientific thinker! Your speculations about the combination of physical opposites are intriguing, to say the least!
The image came from deviantArt.com; I can't recall its former title or who did it.
Compliments will get you everywhere!