If there is any improvement at all, it is simply in the direction of knowledge of causes and effects.

And that is why in all countries the common sense of mankind universally condemns any attempt to interfere with moral ideas.

These represent the social experience of man for thousands and thousands of years; and it is not likely that the wisdom of any one individual can ever better them.

If bettered at all it can not be through theory.

The amelioration must be effected by future experience of a universal kind.