What do you need to write?

Next week is finals week which means this week I am running around with my head on crooked trying to get projects done and snapping at all who try to speak to me. As much as I would love the excuse to ramble about something I'm not going to be graded on I don't have much of a post for you today. Instead I will leave you with a quote followed by a question.

"A woman must have money and a room of her own if she is to write fiction."
--Virginia Woolf, A Room of One's Own

Would you agree? What do you need in order to write? Quiet? A certain pen? Enough sleep? Sleep deprivation? Coffee?