Light colours would have no meaning if you’d never seen a rich burgundy or a deep brown. Orange isn’t complimented by yellow, but by deep, dark blue. Grey isn’t mixed from white alone.
Shadows can be beautiful. They add depth to the landscape and cause hardly any trouble at all, provided they are firmly sewn to the soles of your feet.
When the path is rough and rocky, your feet find something to press against. Without friction, without something to struggle against, we’d have no control over our motion. We’d never be able to choose our direction.
Life can’t be perfect. At least not yet. Though maybe one day we’ll look back and realize it always was.