We have just seen “Chance and Necessity” from the perspective of Thomas Bayes and Jacques Monod. Before we get to the case of William Butler Yeats, let’s briefly consider famous non-scientific cases like Joseph Conrad’s Chance, Charles Sanders Peirce’s anthology of essays, Values in a Universe of Chance, and the phrase “nothing but chance,” which was central to the philosophy of Simone Weil.
Yeats attempted to use words to express largely numerical concepts. In the collection Mythologies, he wrote, “I think that all religious men have believed that there is a hand not ours in the events of life, and that, as somebody says in Wilhelm Meister, accident is destiny;…” (p. 336) Here we have chance, but what about necessity? He later states, “I do not doubt those heaving circles, those winding arcs, whether in one man’s life or in that of an age, are mathematical…” (p. 340).
Finally, we read, “I have always sought to bring my mind close to the mind of Indian and Japanese poets, old women in Connacht, mediums in Soho, lay brothers whom I imagine dreaming in some mediaeval monastery the dreams of their village, learned authors who refer all to antiquity; to immerse it in the general mind where that mind is scarce separable from what we have begun to call ‘the subconscious’; to liberate it from all that comes of councils and committees, from the world as it is seen from universities…” (p. 343).
As may be expected from a fundamentally poetic nature, Yeats parts company with the mathematics and science of Bayes and Monod. Like the philosopher Heidegger, who valued equipmental being in use, Yeats is profoundly ruralist, revering the Irish peasant, who has a more primordial connection to nature and folklore. Yeats’ view of “chance and necessity” both mirrors mathematical or scientific thought while trying to remain divorced from it.