The lines in this excerpt from "The Lady of Shalott" by Alfred, Lord Tennyson that describe actions taken by the Lady of Shallot to defy the curse are:
With a steady stony glance—
Like some bold seer in a trance,
Beholding all his own mischance,
Mute, with a glassy countenance—
She look'd down to Camelot.
It was the closing of the day:
She loos'd the chain, and down she lay;
The broad stream bore her far away,