What Does It Mean That the Head Is Made of Fire?

Q: The Sefer Yetzirah (the Book of Formation) teaches that our head is created from fire and the belly from water. What does it mean?

A: The Sefer Yetzirah points precisely at the bare truth of how we are built.

Part One: How We Are Built

When we look at fire, we see that it rises. That is its nature. And so human thought, rooted in the element of fire, has the capacity to rise as well, to ascend and attach itself to the Infinite, blessed be He.

The word neshamah (נשמה, soul) carries within it the letters of shemen (שמן, oil). And just as oil floats on the surface of water without mixing, the soul of a person hovers over them, present but not dissolved into the body.

The body itself is founded in water. The fetus lives in mei shafir (מי שפיר, amniotic fluid). Water is what sustains physical life through its passage in time. So the head, which houses the soul, is fire. And the belly signals that a process has already begun: a beginning — head (ראש), a middle — belly (תוך), an end — legs (סוף).

Part Two: The Relationship Between Fire and Water

When we look at the elements, a clear pattern emerges: ascent happens through fire, descent through water. We can see it in the biblical stories. Elijah’s merkavat esh (מרכבת אש, chariot of fire) rides up in flame. Sailors, on the other hand, are called in Hebrew yordei yam (יורדי ים, those who descend into the sea) — as in Psalms 107:23. The language already tells us the quality of each element.

Part Three: The Bush That Does Not Burn Up

This is exactly why Moses, standing before the burning bush, asked what he asked. Not “how is the bush on fire,” but why does it not burn up? He understood what fire does. Fire consumes. Whatever it touches becomes ash. That is the law of nature.

But this bush was burning and not being consumed. The fire kept burning, and nothing ended. Moses was looking at infinity (and hid his face from it. A burning that never resolves into ash and silence — as David cries out in Psalms 83:2 al domi lach (אל דמי לך), “do not be silent.”

There is an Infinite that burns and is never consumed.