Intelligence is so damn rare and the people who have it often have such a bad time with it that they get bitter or propagandistic and then it's not much use.
The assertion that 'all men are created equal' was of no practical use in effecting our separation from Great Britain and it was placed in the Declaration not for that, but for future use.
We are adapted to infinity. We are hard to please, and love nothing which ends: and in nature is no end; but every thing, at the end of one use, is lifted into a superior, and the ascent of these things climbs into daemonic and celestial natures.
We must begin by acknowledging a hard truth. We will not eradicate violent conflict in our lifetimes. There will be times when nations, acting individually or in concert, will find the use of force not only necessary but morally justified.