Reference: Postulate Mechanics
Two Things or One?
Some very smart thinkers in history believed that your mind and your body are two totally separate things — like oil and water that can never mix. This idea is called dualism (say it like: “doo-al-iz-um”).
But other thinkers said, “Wait a minute — mind and body are really just two sides of the same coin.” That idea is called monism.
Here is the big puzzle: if your mind and body were completely different and had nothing to do with each other, how could they ever talk to each other? When you feel scared, your heart beats faster. When you stub your toe, your brain feels pain. They clearly do talk to each other. So something must be connecting them!
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Everything Is Connected — Like Hot and Cold
Think about temperature. There is hot, and there is cold — but there is also everything in between: warm, cool, lukewarm. There is a smooth gradient (a slow change) from one to the other.
The same thing is true for mind and body. They might seem very different, but there is a smooth gradient connecting them, made of substance.
What is substance? Substance is basically anything you can sense — anything you can see, hear, feel, touch, or think about. The three main kinds of substance are:
- Matter — solid, touchable stuff (like rocks and bones)
- Energy — active stuff (like light, heat, and movement)
- Thought — the invisible stuff inside your mind
These three form a kind of ladder, going from the most “solid” (matter) to the least “solid” (thought). They are all connected, just like the rungs of a ladder.
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What Is Real?
“Real” can mean two things:
- What is truly, deeply there underneath everything.
- The whole picture of everything that exists.
Think of it like a big puzzle. The very first piece — the starting piece — is called a postulate (say: “pos-chew-lit”). A postulate is a basic idea you accept as true and then build everything else on top of. Like in math class, when the teacher says, “Okay, let’s assume this is true — now what follows?”
Everything else in the universe flows from that starting piece. And for something to be truly real, all the pieces of the puzzle have to fit together without any gaps or contradictions.
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So, Mind and Body — Are They Really Two Different Things?
Here is the answer from this book:
- Your mind is made of thought-substance.
- Your body is made of energy and matter-substance.
- Both can be sensed. Both are forms of the same underlying stuff.
So mind and body are not totally different and separate. They are more like different flavors of the same ice cream. That is why they can affect each other.
When your thinking gets very complex and active, that creates what we call consciousness — your sense of being aware. When your body gets very complex in its movements and systems, that creates agility and life.
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The Bottom Line
Mind and body are not the same thing — they are different. But they are not completely separate either — they are connected through a ladder of substance (matter → energy → thought).
Saying they have nothing in common is like saying hot and cold have nothing in common — it just ignores everything in between. The mind can never truly exist all by itself, completely cut off from the body.
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