Yin and Yang, the two that are one

Start here, because everything else in these letters leans on it. Yin and yang are not two armies. They are the two halves of a single turning, the way the day has a noon and a midnight and you would not call one of them wrong.

Yin is the shadow side of the hill, the cool of it, the part that gathers and waits and holds. Yang is the sunlit face, the part that rises and spends and moves out into the world. You are both, always, the whole day long. You breathe in, that is yin, you gather. You breathe out, that is yang, you give. Try to only breathe out and see how long you last.

The oldest mark of it, that round symbol everyone has seen, the thing people put on flags and tattoos without reading it, look at it again. There is a dot of dark inside the light and a dot of light inside the dark. That is the whole teaching in one glance. Nothing is purely one thing. The hardest person you know has a soft seed in them, and the softest has a spine of iron, and the trick of a life is learning when to let which one lead.

The west wants to pick a side. Be positive, it says, be up, be productive, push. But a year that was all summer would burn the field to nothing. The rest is not the absence of the work, the rest is the other half of the work. Winter is not the year failing. Winter is the year keeping its strength underground where you can't see it doing anything at all.