Note to As You Like It, 2.1.19-20: "translate the stubbornness of fortune / Into so quiet and so sweet a style"
translate the stubbornness of fortune / Into so quiet and so sweet a style: i.e., transform the brute facts of misfortune into a patient and hopeful philosophy of life. In an ordinary view of things, the Duke has suffered from "the stubbornness of fortune"; he has lost his dukedom to his brother, and he must live in the forest. However the Duke is quite happy to live without the comforts of the ducal court he once ruled.