I said in the beginning, did I not?

I said in the beginning, did I not?—
Prophetic of the end, though unaware
How light you took me, ignorant that you thought
I spoke to see my breath upon the air:
If you walk east at daybreak from the town
To the cliff’s foot, by climbing steadily
You cling at noon whence there is no way down
But to go toppling backward to the sea.
And not for birds nor birds’-eggs, so they say,
But for a flower that in these fissures grows,
Forms have been seen to move throughout the day
Skyward; but what its name is no one knows.
’Tis said you find beside them on the sand
This flower, relinquished by the broken hand.