Pure Darkness

In the Parapsychology lecture hall, Professor Fury proclaimed;
'There is no such thing as 'pure darkness' - but there are shades.'
He wrote;

Inherent Darkness + Dark Intention + Dark Energy = Form of Action + Creative Ability + Skill + Experience.

'This accounts for why some dark entities have more power and ability than others.'

'That's not science!' Shouted one student.
Fury looked at the door. It slammed shut. The lock clicked fast.
'Behold.'
Nothing seemed to change. There was a nervous laugh!
Then flames leapt from the junction box lighting wallpaper and drapes.

Fury stepped out. Through the wall.