The Book of Truth

There is nothing left, now,
That can be taken back.
This is true of all moments that you've lived,
In case you've missed this fact.

And this is true of each moment that's past,
Since you read the words that you have just read,
Oops, there goes one more now,
That will be unchanged until you are dead.

And yet each moment on the horizon,
Is wholly undefined,
You could be snatched by an alien ship,
Like in The Life of Brian.

So, what to do,
Bookmarked by such contrast?
There is no book that provides true guidance,
So treat each moment as if it's your last.