Zechariah Chafee Jr., a professor at Harvard Law School from 1916 to 1956, established many of the foundations of modern First Amendment jurisprudence in his articles and landmark book, Free Speech (1920).
His observation in a 1941 article, Disorderly Conduct of Words, 41 Colum. L. Rev. 384, was the inspiration for this website:
Words are the principal tools of lawyers and judges, whether we like it or not. They are to us what the scalpel and insulin are to the doctor, or a theodite and sliderule to the civil engineer. So we need to know more about their imperfections.