What Is It Like to Be a Bat? Thomas Nagel's "Mortal Questions"

Thomas Nagel’s Mortal Questions is a collection of essays that take up the deepest and most human philosophical questions, death, the meaning of life, the nature of consciousness, moral luck, the absurd, with unusual clarity, honesty, and depth. Nagel writes without jargon and without false reassurance; he is willing to sit with hard questions and admit when they have no easy answers. The collection contains one of the most famous and influential philosophy essays of the twentieth century, “What Is It Like to Be a Bat?”, which reframed the entire debate about consciousness. Reading Nagel is a model of how philosophy can address the questions that actually matter to us, not as technical puzzles, but as the real, mortal questions of beings who must live and die.

Here is what Mortal Questions taught me about the mystery of consciousness, about moral luck, and about facing the hard questions honestly.

Key takeaways

• “What is it like to be a bat?” Consciousness involves a subjective point of view that science struggles to capture.
• The subjective character of experience may not be fully reducible to physical facts.
• “Moral luck”: we are judged for outcomes partly beyond our control.
• The absurd arises from the clash between our seriousness and the cosmic view.
• Philosophy should face hard questions honestly, without false comfort.

The mystery of consciousness

Nagel’s most famous contribution is the essay “What Is It Like to Be a Bat?”, which crystallised a profound problem about consciousness. A bat perceives the world through echolocation, a mode of experience utterly alien to us. We can learn everything science can tell us about how a bat’s brain and sonar work, every physical fact, and yet, Nagel argues, we still could not know what it is actually like, from the inside, to be a bat, to experience the world as the bat subjectively experiences it. This points to something deep: consciousness essentially involves a subjective point of view, a “what it is like” to be that creature, and this subjective character of experience seems to resist being fully captured by objective, physical description. The objective methods of science describe the world from no particular point of view; but consciousness exists precisely as a point of view. This is the heart of what philosophers now call the “hard problem” of consciousness, and Nagel’s bat essay framed it with unforgettable clarity. He does not claim consciousness is non-physical, only that our current concepts cannot bridge the gap between the objective and the subjective, and that the mystery is real.

Moral luck

Another of Nagel’s deep contributions is his exploration of “moral luck,” a genuinely unsettling problem. We like to believe that people can only be morally judged for what is within their control, that praise and blame should track our choices, not our circumstances. Yet, Nagel shows, our actual moral judgments constantly violate this principle. Consider two equally reckless drivers; one happens to hit a child who runs into the road, the other, by sheer luck, does not. We judge the first far more harshly, though the only difference is luck, the chance presence of the child. Or consider how much of our character is shaped by the luck of our upbringing and circumstances, which we did not choose. The more we examine it, the more we find that luck pervades moral judgment, that we are held responsible for outcomes and even for qualities of character that lie substantially beyond our control. This is a real and disturbing tension at the heart of ethics, and Nagel, characteristically, refuses to resolve it falsely. He lets us feel the genuine paradox: that morality seems to require control, yet luck is everywhere.

Facing hard questions honestly

What I admire most about Nagel, across all these essays, is his intellectual honesty in the face of hard questions. He does not offer false comfort or pretend to solutions he does not have. On death, he refuses both the easy consolation that death is “nothing to us” and easy despair, sitting instead with its genuine difficulty. On the meaning of life and the absurd, he locates the absurd not in any external fact but in our peculiar capacity to step back and view our own intense seriousness from a cosmic standpoint from which it seems to matter not at all, and he treats this not as cause for anguish but with a kind of wry acceptance. Throughout, Nagel models a way of doing philosophy that takes the real, mortal questions seriously, addresses them with rigour and clarity, and has the honesty to admit when they remain genuinely open. He refuses both dogmatism and despair, and that refusal is itself a kind of wisdom.

What I’m taking with me

Mortal Questions is a model of philosophy at its most humane and honest, addressing the questions that actually matter with clarity and without false comfort. What I am taking from Nagel is his profound framing of the mystery of consciousness, the irreducible “what it is like” of subjective experience that the bat essay makes so vivid; his unsettling exploration of moral luck and how much of our moral standing lies beyond our control; and above all his example of facing the hard, mortal questions, death, meaning, the absurd, with rigour, honesty, and the courage to leave them open when they must remain so. Nagel reminds me that the deepest philosophical questions are not abstractions but the real questions of beings who must live, choose, and die.

Frequently asked questions

What is Mortal Questions about?

It is a collection of essays by Thomas Nagel addressing deep human questions, consciousness, death, the meaning of life, moral luck, the absurd, with clarity and honesty, including his famous essay “What Is It Like to Be a Bat?”

What is the point of “What Is It Like to Be a Bat?”

Nagel uses the bat to show that consciousness involves a subjective point of view, a “what it is like” to be a creature, that resists being fully captured by objective physical science, framing what is now called the “hard problem” of consciousness.

What is “moral luck”?

Nagel’s term for the way we are morally judged for things partly beyond our control, such as the outcomes of our actions or the character shaped by our circumstances, which conflicts with the idea that we are only responsible for what we control.

References & further reading

1. Nagel, Thomas. Mortal Questions. Cambridge University Press, 1979.
2. Nagel, Thomas. The View from Nowhere. Oxford University Press, 1986.
3. Williams, Bernard. Moral Luck. Cambridge University Press, 1981.