And tell him it's quite true that the best of the philosophers are of no use to their fellows; but that he should blame, not the philosophers, but those who fail to make use of them.
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.
Since periods of great change, such as the present one, come so rarely in human history, it is up to each of us to make the best use of our time to help create a happier world.
We should never forget that God granted us the power to reason so that we would do His work here on Earth - so that we would use science to cure disease, and heal the sick, and save lives.