B. G. Jefferis and J. L. Nichols, Searchlights on Health — Small Families and the Improvement of the Race (1919)
“ WELFARE OF MANKIND.—The advancement of the welfare of mankind is a most intricate problem: all ought to refrain from marriage who cannot avoid abject poverty for their children; for poverty is not only a great evil, but tends to its own increase by leading to recklessness in marriage. ”
