Ok ok,

Light can change. Every fleeting moment is testimony to that. But the Dark cannot. The Dark seeks immobile stasis; the Light seeks progression. The Dark crouches in a perceived perfection; the Light, however, moves on, obsessed by the concept of perfectibility. Is light good and therefore darkness evil? Only the one who embraces both as equals can choose. Which side are you on?
Cheers.
ps: For those who are counting, the dark existed well before the formation of light.
