William Jackson Humphreys,
Popular Science Monthly
(1909)
“ He alone has discovered even so simple a thing as how, by putting the half burned logs closer together and by adding fresh fuel, to keep burning the fire that, like himself, many an animal enjoys but knows not how to obtain; a discovery that has been of incalculable benefit to him and will be. And so too each additional discovery, by the fuller knowledge and wider control of nature it brings, marks a gain in the struggle for life and for happiness. ”
