Selim M. Franklin, Popular Science Monthly (1885)
“ To understand clearly the definition of the science, it is necessary to ascertain what the well-being of humanity is. This can be done only by tracing all motives and feelings to their ultimate cause. This ultimate cause is the most powerful instinct implanted in human nature—the preservation of life, which includes our own life and that of our offspring. We live and we want to live. Unconsciously we will flee from danger. We will fight frantically against death. ”
