Explain the following extracts with reference to the context.
(a) The human dress is forged iron,
The human form a fiery forge,
The human face a furnace sealed,
The human heart its hungry gorge.
(b) And did those feet in ancient time
Walk upon England's mountains green?
And was the holy lamb of God
On England's pleasant pastures seen?
(c) Tiger! Tiger! burning bright
In the forest of the night,
What immortal hand or eye
Could frame thy fearful symmetry.