Diana Gabaldon said this quote

When I asked my da how ye knew which was the right woman, he told me when the time came, I'd have no doubt. And I didn't. When I woke in the dark under that tree on the road to Leoch, with you sitting on my chest, cursing me for bleeding to death, I said to myself 'Jamie Fraser, for all ye canna see what she looks like, and for all she weights as much as a good draft horse, this is the woman.