I used to to do quick 30second sketches just to get creative juices flowing, or sometimes to vent and express emotions on paper.
Some quick ones from dark days...

"Fear"
(I think there're a couple words mixed into the darkness...)
(IMG:http://members.shaw.ca/Ryan-Enns/images/fear.jpg)

"Despair"
(Scan didn't turn out very dark... it was a light sketch).
(IMG:http://members.shaw.ca/Ryan-Enns/images/despair.jpg)

"Hate"
In a perfectly aligned world, all it takes is a slight skew to fuck everything up.
Here, just two of the lines are out of whack, and it envelopes the entire page, eventually destroying the whole.
Look close and tell me what you see...
(IMG:http://members.shaw.ca/Ryan-Enns/images/hate.jpg)