How to Think Without Losing Your Mind

An Enquiry Concerning Human Understanding

We see one event follow another. We assume a rule. We are probably guessing.

Author
by David Hume
Type
Expository philosophy · Nonfiction philosophy
Published
1748
Length
Short treatise
Status
Public domain
An Enquiry Concerning Human Understanding summary

The Big Idea

The human mind does not discover secret powers or necessary connections between objects. Instead, it relies on custom and the repeated observation of events, which we mistakenly label as cause and effect. Because we cannot observe the tie between a volition and its physical result, or one billiard ball hitting another, our certainty is just a high-stakes habit. This work applies these limitations to religion, miracles, and the abstract reasoning of the schools, suggesting that if a book contains neither mathematical logic nor evidence from experience, it is merely sophistry and belongs in the furnace.

An Enquiry Concerning Human Understanding people

Who's named

  • Epictetus

    Stoic sage cited for his austere self-control and detachment

  • Des Cartes

    Thinker who promoted radical doubt as a defense against error

  • Deity

    Subject of persistent, often circular, philosophical and theological disputes

An Enquiry Concerning Human Understanding themes & meaning

What it's really about

Custom
The silent engine behind all human expectation.
Scepticism
A useful boundary for checking speculative nonsense.

Why it's memorable

  • A library book containing neither numbers nor facts being tossed into the fire.
  • The mind struggling to find a glue that binds one event to another.
An Enquiry Concerning Human Understanding bottom line

What it concludes

If a text provides no abstract reasoning or experimental evidence, the only honest intellectual response is to commit it to the flames.

An Enquiry Concerning Human Understanding discussion questions

For your book club

  1. Can we actually observe a causal link or just a sequence?
  2. Does the absence of evidence for miracles suggest their inherent impossibility?
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