No One Must Ever Know

No one must ever know
What I have done
For if anyone does
All my work is undone
And I must gain control
Of this monster inside
In the name of the people who've died!
But how do I deal
With a foe I can't see
Who whenever he wants
Takes possession of me?
In the battle of wills
That is raging inside,
Will I end up as me, or as Hyde?
Could it be?
Have I really lost my way?
Have I lost my mind?
Will I lose the day?
Look at me and say
Where it all went wrong
This has been my dreams
My whole life long
Those who dare to try
Those who want to fly
Will find a way
Am I a good man?
Am I a mad man?
It's such a fine line
Between a good man and a bad...