: One cannot exist without the other; they are rooted in each other.
A roaring fire (Yang) eventually burns out into cold ash (Yin). A still lake (Yin) reflects a raging storm (Yang).
At its core, Yin and Yang describes how seemingly contrary forces are actually . Think of them as two sides of the same coin; you cannot have one without the other.
One cannot exist without the other. There is no "up" without "down," no "full" without "empty." As the Daodejing says, “Being and non-being give rise to each other.”
Endnotes — Sources & Further Reading (suggested for final PDF)