Did God create Evil?

Found this interesting article from Caleb's blog http://calebgriffin.net/

At a certain college, there was a professor with a reputation for
being tough on Christians. At the first class every semester, he
asked if anyone was a Christian, whereupon he proceeded to degrade
any poor soul that timidly answered "Yes," mocking his/her statement
of faith.
One semester, he asked the question and a young freshman raised his
hand. The professor asked, "Did God make everything, young man?"
He replied, "Yes sir, he did!"
The professor responded, "If God made everything, then he made evil."
The student didn't have a response and the professor was happy to
have once again proved the Christian faith to be a myth.
Then another student raised his hand and asked, "May I ask you
something, sir?"
"Yes, you may," responded the professor.
The young man stood up and said "Sir, is there such a thing as cold?"
"Of course there is, what kind of question is that? Haven't you ever
been cold?"
However, to the professor's surprise, this young chap
replied, "Actually, sir, cold doesn't exist. What we consider to be
cold, is really an absence of heat. Absolute zero is when there is
absolutely no heat, but cold does not really exist. We have only
created that term to describe how we feel when heat is not there."
Then the young fellow continued, "Sir, is there such a thing as
dark?"
Once again, the professor responded "Of course there is."
And once again, the young man replied "Actually, sir, darkness does
not exist. Darkness is really only the absence of light. Darkness is
only a term man developed to describe what happens when there is no
light present."
The final question posed by our young friend went like this, "Sir,
is there such thing as evil?"
The professor responded, "Of course. We have rapes, and murders and
violence everywhere in the world; those things are evil."
The student replied, "Actually, sir, evil does not exist. Evil is
simply the absence of good. Evil is a term man developed to describe
the absence of good. God did not create evil. It isn't like truth, or love,
which exist as virtues like heat or light. Evil is simply the state where good
is not present, like cold without heat or darkness without light."
The professor had nothing to say.