"Only when man begins to feel a personal obligation towards his host, the planet, and cultivates an honourable consideration in all his acts for^ the good of the earth as well as for his own benefit, will real harmony begin to exist between humanity and the elements, especially in respect of those subtle conditions which produce some of the diseases and epidemics which are continuing to baffle science."
January 1, 1970
https://en.wikiquote.org/wiki/Vera_Stanley_Alder