“In their phenomena of life the inhabitants of the earth display endless variety. They swim in the waters, soar in the skies, squeeze among the rocks, clamber among the trees, scamper over the plains, and glide among the grounds and grasses. Some are born for a summer, some for a century, and some flutter their little lives out in a day. They are black, white, blue, golden, all the colours of the spectrum. Some are wise and some are simple; some are large and some are microscopic; some live in castles and some in bluebells; some roam over continents and seas, and some doze their little day-dream away on a single dancing leaf. But they are all the children of a commion mother and the co-tenants of a common world. Why they are here in this world rather than some place else; why the world in which they find themselves is so full of the undesirable; and whether it would not have been better if the ball on which they ride and riot had been in the beginning sterilised, are problems too deep and baffling for the most of them. But since they are here, and since they are too proud or too superstitious to die, and are surrounded by such cold and wolfish immensities, what would seem more proper than for them to be kind to each other, and helpful, and dwell together as loving and forbearing members of One Great Family?”

"Conclusion", pp. 324–325
The Universal Kinship (1906), The Ethical Kinship