Assuredly we bring not innocence not the world, we bring impurity much rather: that which purifies us is trial, and trial is by what is contrary.

Nor war, or battle's sound / Was heard the world around.

Some natural tears they dropped, but wiped them soon; / The world was all before them, where to choose / Their place of rest, and Providence their guide: / They hand in hand with wandering steps and slow / Through Eden took their solitary way.

Being part of the natural world reminds me that innocence isn't ever lost completely; we just need to maintain our goodness to regain it.

Of Man's first disobedience, and the fruit Of that forbidden tree whose mortal taste Brought death into the world, and all our woe

The story gives us back that which many of us have lost within ourselves -- our childhood innocence.