# Eugenics and the Decline of the Birth-rate—Quantity and Quality in the Production of Children—Eugenic Sexual Selection—The Value of Pedigrees—Their Scientific Significance—The Systematic Record of Personal Data—The Proposal for Eugenic Certificates—St. Valentine's Day and Sexual Selection—Love and Reason—Love Ruled by Natural Law—Eugenic Selection not opposed to Love—No Need for Legal Compulsion—Medicine in Relation to Marriage
I
During recent years the question of the future of the human race has been brought before us in a way it has never been brought before. The great expansive movement in civilized countries is over. Whereas, fifty years ago, France seemed to present a striking contrast to other countries in her low and gradually falling birth-rate, to-day, though she has herself now almost reached a stationary position, France is seen merely to have been the leader in a movement which is common to all the more highly civilized nations. They are all now moving rapidly in the direction in which she moved slowly. It was inevitable that this movement, world-wide as it is, should call forth energetic protests, for there is no condition of things so bad but it finds some to advocate its perpetuation. There has, therefore, been much vigorous preaching against "race suicide" by people who were deaf to the small voice of reason, who failed to understand that this matter could not be settled by mere consideration of the crude birth-rates, and that,