See the enfranchised bird, who wildly springs,
With a keen sparkle in his glowing eye
And a strong effort in his quivering wings,
Up to the blue vault of the happy sky. [ Mrs. Norton ]

Eternal Spirit of the chainless mind!
Brightest in dungeons, Liberty! thou art.
For there thy habitation is the Heart -
The Heart which love of thee alone can bind;
And when thy sons to fetters are consigned -
To fetters and the damp vault's dayless gloom,
Their country conquers with their Martyrdom,
And Freedom's fame finds wings on every wind. [ Byron ]

Now had night measured, with her shadowy cone, half-way up hill this vast sublunar vault. [ Milton ]

The knell, the shroud, the mattock, and the grave, the deep, damp vault, the darkness and tbe worm. [ Young ]

The sun had not risen, but the vault of heaven was rich with the winning softness that brings and shuts the day, while the whole air was filled with the carols of birds, the hymns of the feathered tribe. [ James Fenimore Cooper ]