Religions are for a day. They are the clouds. Humanity is the eternal blue. Religions are the waves of the sea. These waves depend upon the force and direction of the wind — that is to say, of passion; but Humanity is the great sea. And so our religions change from day to day, and it is a blessed thing that they do. Why? Because we grow, and we are getting a little more civilized every day, — and any man that is not willing to let another man express his opinion, is not a civilized man, and you know it. Any man that does not give to everybody else the rights he claims for himself, is not an honest man.

The trial of Charles B. Reynolds for blasphemy (1887)