“It was at thirteen years old that Marya Morevna learned how to keep a secret, and that secrets are jealous things, permitting no fraternization.”
“Keep secret things secret and they will serve you the better!”
“Learn her skills, honor her sword, and keep her secrets.”
“Love is an open secret, the most obvious thing in the world and the most hidden, with no why to how it keeps its mystery.”
“There are some secrets which do not permit themselves to be told.”
“I'd learned that some things are best kept secret.”