We define the art of conjecture, or stochastic art, as the art of evaluating as exactly as possible the probabilities of things, so that in our judgments and actions we can always base ourselves on what has been found to be the best, the most appropriate, the most certain, the best advised; this is the only object of the wisdom of the philosopher and the prudence of the statesman.

It seems that to make a correct conjecture about any event whatever, it is necessary to calculate exactly the number of possible cases and then to determine how much more likely it is that one case will occur than another.

*Ars Conjectandi *

The sum of an infinite series whose final term vanishes perhaps is infinite, perhaps finite.

*Ars conjectandi*

Even as the finite encloses an infinite series

And in the unlimited limits appear,

So the soul of immensity dwells in minutia

And in the narrowest limits no limit in here.

What joy to discern the minute in infinity!

The vast to perceive in the small, what divinity!

*Ars Conjectandi*

*Eadem mutata resurgo *

Though changed I shall rise the same

Inscribed on his tomb in the Münster, Basel, with a equiangular spiral, in imitation of Archimedes.