For this knowledge of right living, we have sought a new name....As theology is the science of religious life, and biology the science of [physical] life...so let Oekology be henceforth the science of [our] normal lives...the worthiest of all the applied sciences which teaches the principles on which to found...healthy...and happy life.
Quoted in Robert Clarke (ed.), Ellen Swallow: The Woman Who Founded Ecology (1973)