"That's the reason they're called lessons," the Gryphon remarked (Alice In Wonderland)

"And how many hours a day did you do lessons?" said Alice, in a hurry to change the subject.

"Ten hours the first day," said the Mock Turtle: "nine the next, and so on."

"What a curious plan!" exclaimed Alice.

"That's the reason they're called lessons," the Gryphon remarked: "because they lessen from day to day."

Lewis Carroll (From Alice In Wonderland)