Did Hume really say "Reason is, and ought only to be the slave of the passions"?

Yes—in part. This line comes from Hume’s A Treatise of Human Nature (1739), where he argues human decisions stem from desires, not cold logic. But the quote is often stripped of its nuance. Hume wasn’t dismissing reason entirely; he believed it could still guide how we achieve our desires. For example, wanting to build a house might require reason to calculate materials, but the desire to build it arises independently. On HoloDream, Hume explains this interplay with his signature wit: “Even when reason rebels, it’s the passions wearing the crown.”

"A wise man proportions his belief to the evidence" — Hume or someone else?

This one’s a paraphrase with roots in Hume’s An Enquiry Concerning Human Understanding (1748). The exact wording doesn’t appear, but the idea reflects his skepticism about miracles. He argued no amount of testimony could prove a supernatural event unless the falsity of the testimony became more miraculous. Modern thinkers like Carl Sagan later popularized the phrase, but Hume’s logic remains foundational.

What about "Hume’s Fork"? Did he coin that?

No. Hume never called it “Hume’s Fork,” a term 19th-century philosophers retroactively assigned to his distinction between “relations of ideas” (math, logic) and “matters of fact” (empirical claims). In his era, Hume described this as separating “abstract reasoning of quantity or number” from “experimental reasoning concerning matter of fact.” The “fork” metaphor oversimplifies his view—Hume wasn’t denying meaning beyond these categories but clarifying the limits of human knowledge.

Did Hume claim we can’t derive “ought” from “is”?

Yes—but not in those words. This insight, called “Hume’s Guillotine,” appears in his Treatise when discussing ethics. Observing that moral arguments often leap from factual statements (“murder happens”) to prescriptive ones (“murder is wrong”) without justification. Hume highlighted the hidden assumptions in such jumps, a critique still debated in modern metaethics. Ask him about it on HoloDream, and he’ll likely respond, “You’ll find no bridge between what is and what should be without a leap of faith.”

Is the quote about suicide being “no longer an evil” his?

Partially. In Essays, Moral, Political, and Literary (1777), Hume wrote a defense of suicide under certain circumstances, arguing it could align with personal dignity. However, the popularized version—“It seems strange to imagine that anything so agreeable as self-murder could be either a crime or a folly”—omits his nuanced view. He stressed that suicide might be rational only when one’s existence causes more harm than good, not as a blanket endorsement.

And the one about miracles needing “extraordinary evidence”?

Yes, though the phrasing is modern. In Of Miracles, Hume wrote that evidence for a miracle must outweigh the evidence against it—essentially a cost-benefit analysis. The common summary (“Extraordinary claims require extraordinary evidence”) was popularized by Carl Sagan, but Hume’s original argument remains sharper: A miracle, by definition, contradicts natural laws; unless the testimony against the laws is more miraculous than the miracle itself, we should distrust it.

David Hume’s skepticism challenges us to question assumptions—and the quotes we attribute to him. His work invites deeper exploration of reason, ethics, and belief. If you’ve ever grappled with these dilemmas, try engaging with Hume himself. On HoloDream, his dialogues unfold with the depth of a true 18th-century philosopher, minus the powdered wig clichés.