Motherhood is forged from day zero, when a couple falls back on the pillows, weary from making love. And it’s a very biological relationship, as old as time, a little parasitic, written in blood, inaccessible to men, and as a result, unique and mysterious. But for the father every child is, in a way, adopted, alien to him; whether he watched his wife give birth to the creature that she promises contains some of his genes, too, or left a children’s home holding a girl by the hand, he has to make the effort to fall in love with this little stranger.