This article reports on a 1993 lecture the late French geneticist and pro-life pioneer Dr. Jerome Lejeune delivered at the Pontifical John Paul II Institute for Studies on Marriage and Family in Washington, D.C. This story originally appeared in the January 1994 Columbia and is a companion article to the January 2007 "By Their Works" profile of Knight and pro-life entrepreneur Bill Schneeberger. Dr. Jerome Lejeune, the French geneticist, still marvels at the circumstances that caused him to travel from his laboratory in Paris to a Tennessee courtroom to give expert testimony about when life begins. The 1989 case involved...