Not truth, nor certainty. These I forswore
In my novitiate, as young men called
To holy orders must abjure the world.
"If ..., then," this only I assert;
And my successes are but pretty chains
Linking twin doubts, for it is vain to ask
If what I postulate be justified,
Or what I prove possess the stamp of fact.
Yet bridges stand, and men no longer crawl
In two dimensions. And such triumphs stem
In no small measure from the power this game,
Played with the thrice attenuated shades
Of things, has over their originals.
How frail the wand, but how profound the spell.