Diana Gabaldon said this quote

For my sake,” he said firmly, addressing the air in front of him as though it were a tribunal, “I dinna want ye to bear another child. I wouldna risk your loss, Sassenach,” he said, his voice suddenly husky. “Not for a dozen bairns. I’ve daughters and sons, nieces and nephews, grandchildren—weans enough.”He looked at me directly then, and spoke softly.“But I’ve no life but you, Claire.”He swallowed audibly, and went on, eyes fixed on mine.“I did think, though . . . if ye do want another child . . . perhaps I could still give ye one.