Ban Zhaothe VaultISTJ

More than forty years after she married at 14, Ban Zhao was ill and unsure how long she had left. She began a short book of advice for the girls of her family, and she opened it with a count.

“More than forty years have passed since at the age of fourteen I took up the dustpan and the broom in the Cao family,” she wrote. All that time, she added, she had feared with a trembling heart that she might disgrace her parents.

Before any advice, she set down the length of her service, as exactly as she could. Then she named the private fear she had carried through all of it. It is a Vault's way of opening a life: the account first.

She was born around the year 45 into a family of scholars in Han dynasty China. Her brother Ban Gu was writing the Book of Han, the history of the dynasty. In 92, caught up in the fall of the powerful Dou family, he died in prison with the history unfinished.

A great book whose author dies in prison is often simply lost. This one was rescued by his sister. The emperor summoned her to the palace library to complete it, and she finished the eight tables her brother had left undone. By most reckonings it makes her China's first known woman historian.

There is no glory in a table. There is only the question of whether it is right. She was working inside someone else's half-built house, to his plan, and she did it without needing the credit.

Vaults will recognize the job: finishing what someone else could not, out of loyalty to them and to the work. Nobody gives medals for it. Leaving it scattered would have felt like losing him twice.

Her exactness was noticed. She taught at court, and among her pupils was the future Empress Deng, who later relied on her advice while ruling as regent. Ban Zhao stood beside the throne, and the credit mostly went elsewhere.

Her advice book, Lessons for Women, came late. Its seven short chapters are about humility, work and obedience in a husband's household, the world she had survived. Some lines read like a self-portrait.

She also slipped in an argument of her own. Boys were taught, she wrote, so why should girls not be taught by the same principle?

Then she gave one last instruction: “I wish every one of you, my daughters each to write out a copy for yourself.” She of all people knew how close a text in one fragile set of papers could come to being lost.

The copies spread far beyond her family. Centuries later her little book became the most widely read of the Four Books for Women, and rules a careful, frightened woman wrote for her own girls were handed to generations of strangers as law. The rules traveled well. Her reasons, and her case for teaching girls, were easier to forget.

She died around the year 120. Her brother's history is still read whole, because his sister finished it.