The theory of free speech, that truth is so much larger and stranger and more many-sided than we know of, that it is very much better at all costs to hear everyone's account of it, is a theory which has been justified on the whole by experiment, but which remains a very daring and even a very surprising theory. It is really one of the great discoveries of the modern time.
I believe it is the conviction of the purest men, that the net amount of man and man does not much vary. Each is incomparably superior to his companion in some faculty. His want of skill in other directions, has added to his fitness for his own work.