To be alive is to marvel — at least occasionally, at least with glimmers of some deep intuitive wonderment — at the Rube Goldberg machine of chance and choice that makes us who we are as we half-stride, half-stumble down the improbable paths that lead us back to ourselves. My own life was shaped by one largely impulsive choice at age thirteen, and most of us can identify points at which we could’ve pivoted into a wholly different direction — to move across the continent or build a home here, to leave the tempestuous lover or to stay, to wait for another promotion or quit the corporate day job and make art. Even the seemingly trivial choices can butterfly enormous ripples of which we may remain wholly unwitting — we’ll never know the exact misfortunes we’ve avoided by going down this street and not that, nor the exact magnitude of our unbidden graces.

Perhaps our most acute awareness of the lacuna between the one life we do have and all the lives we could have had comes in the grips of our fear of missing out — those sudden and disorienting illuminations in which we recognize that parallel possibilities exists alongside our present choices. “Our lived lives might become a protracted mourning for, or an endless tantrum about, the lives we were unable to live,” wrote the psychoanalyst Adam Phillips in his elegant case for the value of our unlived lives. “But the exemptions we suffer, whether forced or chosen, make us who we are.”

The garland of those exemptions strews our sense of self — our constellating experience of personal identity which, as the poet and philosopher John O’Donohue so incisively observed, “is not merely an empirical process of appropriating or digesting blocks of life.”

No one has captured that ultimate existential awareness more beautifully, nor with greater nuance, than the trailblazing French existentialist philosopher and feminist Simone de Beauvoir (January 9, 1908–April 14, 1986) in her autobiography, All Said and Done (public library).

From the fortunate rostrum of her own long life, Beauvoir reflects on this constellation of chance and choice:

Every morning, even before I open my eyes, I know I am in my bedroom and my bed. But if I go to sleep after lunch in the room where I work, sometimes I wake up with a feeling of childish amazement — why am I myself? What astonishes me, just as it astonishes a child when he becomes aware of his own identity, is the fact of finding myself here, and at this moment, deep in this life and not in any other. What stroke of chance has brought this about?

With an eye to the element of chance and its myriad manifestations, she adds:

The penetration of that particular ovum by that particular spermatozoon, with its implications of the meeting of my parents and before that of their birth and the births of all their forebears, had not one chance in hundreds of millions of coming about. And it was chance, a chance quite unpredictable in the present state of science, that caused me to be born a woman. From that point on, it seems to me that a thousand different futures might have stemmed from every single movement of my past: I might have fallen ill and broken off my studies; I might not have met Sartre; anything at all might have happened.

But the most curious part of this perplexity, Beauvoir notes, is that despite the larger cosmic accident of all life and the chance nature of our particular lives within it, we experience ourselves and our existence as non-accidental — a disconnect that fringes on the free will paradox. She writes:

Tossed into the world, I have been subjected to its laws and its contingencies, ruled by wills other than my own, by circumstance and by history: it is therefore reasonable for me to feel that I am myself contingent. What staggers me is that at the same time I am not contingent. If I had not been born no question would have arisen: I have to take the fact that I do exist as my starting point. To be sure, the future of the woman I have been may turn me into someone other than myself. But in that case it would be this other woman who would be asking herself who she was. For the person who says “Here am I” there is no other coexisting possibility. Yet this necessary coincidence of the subject and his history is not enough to do away with my perplexity. My life: it is both intimately known and remote; it defines me and yet I stand outside it.

Considering the precise nature of this “curious object,” Beauvoir draws on the physics that revolutionized the human understanding of life and reality in her lifetime, and writes:

Like Einstein’s universe, it is both boundless and finite. Boundless: it runs back through time and space to the very beginnings of the world and to its utmost limits. In my being I sum up the earthly inheritance and the state of the world at this moment. […] And yet life is also a finite reality. It possesses an inner heart, a centre of interiorization, a me which asserts that it is always the same throughout the whole course. A life is set within a given space of time; it has a beginning and an end; it evolves in given places, always retaining the same roots and spinning itself an unchangeable past whose opening toward the future is limited. It is impossible to grasp and define a life as one can grasp and define a thing, since a life is “an unsummed whole,” as Sartre puts it, a detotalized totality, and therefore it has no being. But one can ask certain questions about it.

Of course, as De Beauvoir’s American peer and contemporary Susanne Langer has memorably pointed out, our questions invariably shape our answers. But to this central question of whether and to what degree we are contingent upon chance, De Beauvoir offers an answer that radiates the ultimate antidote to regret:

Chance … has a distinct meaning for me. I do not know where I might have been led by the paths that, as I look back, I think I might have taken but that in fact I did not take. What is certain is that I am satisfied with my fate and that I should not want it changed in any way at all. So I look upon these factors that helped me to fulfill it as so many fortunate strokes of chance.

Complement this particular fragment of the wholly magnificent All Said and Done with philosopher Rebecca Goldstein on what makes you and your childhood self the same person despite a lifetime of change, then revisit Beauvoir on freedom, busyness, and why happiness is our moral obligation, vitality and the measure of intelligence, and her daily routine.