Still Life  - Louise Penny, Ralph Cosham

"You need to learn that you have choices. There are four things that lead to wisdom. You ready for them?"

She nodded, wondering when the police work would begin.

"They are four sentences we learn to say, and mean." Gamache held up his hand as a fist and raised a finger with each point. "I don´t know. I need help. I´m sorry. And one other." Gamache thought for a moment but couldn´t bring it to mind. "I forget. [...]"