Skip to content

Brain Quote by John B. S. Haldane

“If materialism is true, it seems to me that we cannot know that it is true. If my opinions are the result of the chemical processes going on in my brain, they are determined by the laws of chemistry, not those of logic.” quote by John B. S. Haldane
Download Open image
“If materialism is true, it seems to me that we cannot know that it is true. If my opinions are the result of the chemical processes going on in my brain, they are determined by the laws of chemistry, not those of logic.”

John B. S. Haldane

About This Quote

Source Letter: Scientific Philosophy, 1935

If materialism is true, knowledge is chemically determined, not logically derived, challenging certainty.

In simple terms: Science may be chemically bound.

Key Takeaway

Question foundations of knowledge.

Themes

philosophy materialism knowledge

Mood

analytical skeptical

Type

philosophical scientific

When to use this quote

  • science education
  • philosophical debate
  • ethics

Key Concepts

determinism epistemology

Questions to Reflect On

  • Can we trust intuition?
  • What role does logic play?
A Different Perspective

Logical reasoning still matters.

3.1 out of 5 (7 ratings)

More by John B. S. Haldane

Explore all 65 John B. S. Haldane quotes

More Brain quotes

Browse all 8,466 Brain quotes