In manufacturing food for its own cells, the plant is producing a supply of food that will be available for the sustenance of animal cells also. Thus… - Luther Burbank

But with those who are mentally defective—ah, here is the hardest question of all!—what shall be done with them? ...In the case of human beings in whom the light of reason does not burn... shall they be eliminated from the race? Go to the mother of an imbecile child and get your answer. ...For these helpless unfortunates, as with those who are merely unfortunate from environment, I should enlist the best and broadest state aid.

The plant laboratories in which this wonderful and vitally essential transformation is effected are chiefly located in the leaf of the plant... the thoughtful person must regard this structure—the most ordinary green leaf of tree or shrub or vine or the tiniest blade of grass—as in some respects the most wonderful thing in the world.

Sex is not a necessary attribute of all living things.. [it is] a most necessary attribute if progress in evolution of new forms is to occur, as they have progressed through the ages and as we now see them progressing on this planet.