This missing science of heredity, this unworked mine of knowledge on the borderland of biology and anthropology, which for all practical purposes is as unworked now as it was in the days of Plato, is, in simple truth, ten times more important to humanity than all the chemistry and physics, all the technical and industrial science that ever has been or ever will be discovered.
I was never a great amorist, though I have loved several people very deeply.
The only true measure of success is the ratio between what we might have done and what we might have been on the one hand, and the thing we have made and the things we have made of ourselves on the other.
These are the rights of all human beings. They are yours wherever you are. Demand that your rulers and politicians sign and observe this declaration. If they refuse, if they quibble, they can have no place in the new free world that dawns upon mankind.
Man is an imperfect animal and never quite trustworthy in the dark.
If we don't end war, war will end us.
If we can possibly avoid wrecking this little planet of ours, we will, But there must be risks! There must be. In experimental work there always are!
Anthropology has been compared to a great region, marked out indeed as within the sphere of influence of science, but unsettled and for the most part unsubdued. Like all such hinterland sciences, it is a happy hunting-ground for adventurers.
The plain message physical science has for the world at large is this, that were our political and social and moral devices only as well contrived to their ends as a linotype machine, an antiseptic operating plant, or an electric tram-car, there need now at the present moment be no appreciable toil in the world.
Nothing endures, nothing is precise and certain (except the mind of a pedant), perfection is the mere repudiation of that ineluctable marginal inexactitude which is the mysterious inmost quality of Being. Being, indeed! There is no being, but a universal becoming of individualities, and Plato turned his back os truth when he turned towards his museum of specific ideals.