Jekyll and Hyde by Mary Shelly Chapter 1 Page 17

If you have been inexact in any point you had better correct it.”

“I think you might have warned me,” returned the other with a touch of sullenness. “But I have been pedantically exact, as you call it. The fellow had a key; and what’s more, he has it still. I saw him use it not a week ago.”

Mr. Utterson sighed deeply but said never a word; and the young man presently resumed. “Here is another lesson to say nothing,” said he. “I am ashamed of my long tongue. Let us make a bargain never to refer to this again.”

“With all my heart,” said the lawyer. “I shake hands on that, Richard.”