Actually, found the longer version of the A. Powell Davies one. DS's oddfather edited it down a bit because he didn't feel comfortable doing something long, but I think I prefer this one in general:
Let our children learn to be honest, both with themselves and with all others. This is a basic human value.
Let our children learn to love truth. No matter whence it comes, so it be truth let them freely accept it, even when it goes against them. If they do this, they will not be much hampered by prejudice, for wherever truth can enter, prejudice cannot long remain. Moreover, by fidelity to truth the mind is nourished and becomes well grown.
Let our children find courage and discover that they are stronger than the things of which they are afraid. Courage in their dealings with their own lives, courage in speaking out for the right, in condemning injustice, in standing for good against evil, courage to remain loyal to a deep conviction at whatever cost.
Let our children cultivate breadth of humanity: a cordial welcome for whatever is beneficial to the human race, no matter whence it comes.
Let our children cultivate kindness, for it does not often come without cultivation, and it is needed: the world is too harsh.
Let our children cultivate humility. Let our children learn that they are like other people... and that there is good and bad in all of us, and that each of us must make
a hard struggle to bring the good out on top. Then, because of their own lost battles, they will acquire a gentle wisdom and walk softly where other people might get hurt.