"Take some more tea," the March Hare said to Alice, very earnestly.
"I've had nothing yet," Alice replied in an offended tone, "so I can't take more."
"You mean you can't take less," said the Hatter: "it's very easy to take more than nothing."
More or less "in a greater or lesser degree" is from early 13c.; appended to a statement to indicate approximation, from 1580s.