Could someone translate this Latin sentence?

I DID check Google first, but I don’t want to use a translate-for-money site, nor do I want to download software. I just want to know what this sentence means. It comes from the back of Neil Young’s 1981 re-ac-tor album (which, BTW, is not available on CD for some reason):

“Deus, dona mihi serenitatem accipere res quae non possum mutare, fortitudinem mutare res quae possum, atque sapentiam differentiam cognoscere.”

Many thanks!

Ah yes. The serenity prayer.

God, give me the serenity to accept the things I cannot change, the strength to change the things I can, and the wisdom to know the difference.

Composed in 1932: The Serenity Prayer
It was not originally written in latin - But that’s the prayer.
God - Grant me the serenity, to accept the things I cannot change.
The Courage*(Fortitude)* to change the things I can, and the wisdom to know the difference.

Thanks. Seems a little odd to me. I really expected something more, uh, cryptic!