The degree of civilization which a people has reached, no doubt, is marked by their anxiety to do as they would be done by. - Oliver Wendell Holmes

It is better for all the world, if instead of waiting to execute degenerate offspring for crime or to let them starve for their imbecility, society can prevent those who are manifestly unfit from continuing their kind. The principle that sustains compulsory vaccination is broad enough to cover cutting the fallopian tubes. Three generations of imbeciles are enough.

With all humility, I think, "Whatsoever thy hand findeth to do, do it with thy might." Infinitely more important than the vain attempt to love one's neighbor as one's self. If you want to hit a bird on the wing, you must have all your will in focus, you must not be thinking about yourself, and equally, you must not be thinking about your neighbor: you must be living in your eye on that bird. Every achievement is a bird on the wing.

I do not think the United States would come to an end if we lost our power to declare an Act of Congress void. I do think the Union would be imperiled if we could not make that declaration as to the laws of the several States.