For....

For every peak you conquer
A valley must be traversed
For every bridge you cross
A connection must be made
For every notable accomplishment
A soul must endure trials and tribulations
For every memorable moment
One must live with the mundane
Without a negative
Positive has no meaning
Without depression
Euphoria would have no meaning
To truly walk as one with light
You must experience darkness
To once again
Soar with the angels
One must trod
The dusty roads of earth