
From the author of the #1 New York Times bestseller On Bullshit, a landmark account of Descartes, reason, and truth
In this classic work, philosopher and bestselling author Harry Frankfurt provides a compelling analysis of the question that not only lies at the heart of Descartes's Meditations, but also constitutes the central preoccupation of modern philosophy: on what basis can reason claim to provide any justification for the truth of our beliefs? Demons, Dreamers, and Madmen provides an ingenious account of Descartes's defense of reason against his own famously skeptical doubts that he might be a madman, dreaming, or, worse yet, deceived by an evil demon into believing falsely.
Frankfurt's masterful and imaginative reading of Descartes's seminal work not only stands the test of time; one imagines Descartes himself nodding in agreement.
Harry Gordon Frankfurt (May 29, 1929 – July 16, 2023) was an American philosopher. He was a professor emeritus of philosophy at Princeton University, where he taught from 1990 until 2002. Frankfurt also taught at Yale University, Rockefeller University, and Ohio State University. Frankfurt made significant contributions to fields like ethics and philosophy of mind. **Source**: [Harry G. Frankfurt](https://en.wikipedia.org/wiki/Harry_Frankfurt) on Wikipedia.

From the author of the #1 New York Times bestseller On Bullshit, a landmark account of Descartes, reason, and truth
In this classic work, philosopher and bestselling author Harry Frankfurt provides a compelling analysis of the question that not only lies at the heart of Descartes's Meditations, but also constitutes the central preoccupation of modern philosophy: on what basis can reason claim to provide any justification for the truth of our beliefs? Demons, Dreamers, and Madmen provides an ingenious account of Descartes's defense of reason against his own famously skeptical doubts that he might be a madman, dreaming, or, worse yet, deceived by an evil demon into believing falsely.
Frankfurt's masterful and imaginative reading of Descartes's seminal work not only stands the test of time; one imagines Descartes himself nodding in agreement.
Harry Gordon Frankfurt (May 29, 1929 – July 16, 2023) was an American philosopher. He was a professor emeritus of philosophy at Princeton University, where he taught from 1990 until 2002. Frankfurt also taught at Yale University, Rockefeller University, and Ohio State University. Frankfurt made significant contributions to fields like ethics and philosophy of mind. **Source**: [Harry G. Frankfurt](https://en.wikipedia.org/wiki/Harry_Frankfurt) on Wikipedia.