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"It's very good jam," said the Queen. "Well, I don't want any to-day, at any rate." "You couldn't have it if you did want it," the Queen said. "The rule is jam tomorrow and jam yesterday but never jam to-day." "It must come sometimes to "jam to-day,""Alice objected. "No it can't," said the Queen. "It's jam every other day; to-day isn't any other day, you know." "I don't understand you," said Alice. "It's dreadfully confusing."

Lewis Carroll “Alice Through the Looking Glass”, Lulu.com
It's very good jam, said the Queen. Well, I don't want any to-day, at any rate. You couldn't have it if you did want it, the Queen said. The rule is jam tomorrow and jam yesterday but never jam to-day. It must come