Robert Louis Stevenson. Treasure island (№ 338416)

This Ben Gunn can rely on? he asked.
- I don't know, sir, ' I replied. I'm not quite sure that his head is in order.
- If I'm not quite sure, so he's OK, ' said the doctor. - When a person three years biting his nails on a desert island, Jim, it may not look just as normal as you or me. That's how people are.