Probability = Possibility

Based on the law of probability 
Everything is possible because 
The sheer existence of possibility 
Confirms the existence 
Of impossibility.

After-Thought

I thought of Thee, my partner and my guide, 
As being past away.–Vain sympathies!
For, backward, Duddon! as I cast my eyes,
I see what was, and is, and will abide;
Still glides the Stream, and shall for ever glide;
The Form remains, the Function never dies;
While we, the brave, the mighty, and the wise,
We Men, who in our morn of youth defied
The elements, must vanish;–be it so!
Enough, if something from our hands have power
To live, and act, and serve the future hour;
And if, as toward the silent tomb we go,
Through love, through hope, and faith’s transcendent dower,
We feel that we are greater than we know. 

– William Wordsworth