Brightly

The brighter the light the more fun you can have.
If you have huge stadium floodlights you can play football at night or hold a concert for 25,000 people or stage an Olympic Games.
If you have a flashlight you can usher one person to a seat, or perhaps walk single file several people along an easy path.
If you have a bonfire you can watch it and toast marshmallows.
If you have a solitary birthday candle you can blow it out.

The same amount of darkness, but depending how much light you have you can bore one person or entertain 100,000.

Let your light shine brightly before all men...