The Love Sonnets of Proteus, Vita Nova, CVII: The same continued

Clutching the brink with hands and feet and knees,
With trembling heart, and eyes grown strangely dim,
A part thyself and parcel of the frieze
Of that colossal temple raised to Time,
To gaze on horror, till, as in a crime,
Thou and the rocks become accomplices.
There is no voice, no life 'twixt thee and them.
No life ! Yet, look, far down upon the breeze
Something has passed across the bosom bare
Of the red rocks, a leaf, a shape, a shade.
A living shadow ! Ay, above thee there,
Weaving majestic circles overhead,
Others are watching. — This is the sublime
To be alone, with eagles in the air.