On Seeing the Elgin Marbles

My spirit is too weak - mortality
Weighs heavily on me like unwilling sleep,
And each imagined pinnacle and steep
Of godlike hardship, tells me I must die
Like a sick eagle looking at the sky. (5)
Yet 'tis a gentle luxury to weep,
That I have not the cloudy winds to keep
Fresh for the opening of the morning's eye.
Such dim-conceived glories of the brain
Bring round the heart an indescribable feud; (10)
So do these wonders a most dizzy pain,
That mingles Grecian grandeur with the rude
Wasting of old Time - with a billowy main -
A sun - a shadow of a magnitude.