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Portrait of William James
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William James

Pragmatist and psychologist — truth is what works, and the will to believe.

Pragmatism19th CenturyAmerican1842–1910 CE◦ New York City (USA)19th century CE

Overview

A founder of American psychology and, with Peirce, of pragmatism, William James made philosophy vivid and humane. He held that the truth of an idea is a matter of its practical success — how well it works in experience — and defended, against strict rationalism, our right to believe where evidence is inconclusive and life demands a choice. His studies of consciousness, habit, and religious experience remain landmarks.

What they supported — and why

The pragmatic theory of truth

SupportedAn idea is true insofar as believing it works — it guides us fruitfully through experience; truth is something that 'happens' to an idea in its use.

WhyRather than a static copy of reality, truth is tested in practice, so its meaning lies in the difference it makes to our dealings with the world.

Radical empiricism

SupportedExperience, including its relations and transitions, is the whole of reality we can speak of; philosophy should stick to what is experienced.

WhyIf we take experience seriously and completely, we need not posit realities beyond it, and its connectedness is as real as its parts.

The will to believe

SupportedFor 'live', momentous, and undecidable options — such as religious faith — we may legitimately let our passional nature decide.

WhyIn genuine forks where evidence cannot settle the matter and refusing to choose is itself a choice, it is rational and permissible to believe.

Causes championed

  • A practical, humane philosophy
  • Openness to religious and personal experience
  • Pluralism against rigid systems

Issues wrestled with

  • What is truth?
  • What is the nature of experience and consciousness?
  • When may we believe beyond the evidence?

Hurdles faced

  • Lifelong ill health and depression
  • Charged with making truth merely subjective (which he denied)

Works & books

2 catalogued. Status shows how much survives to today.

The Principles of Psychology

Survives

c. 1890 CE

A foundational work of modern psychology (the 'stream of consciousness').

Pragmatism; The Varieties of Religious Experience

Survives

His theory of truth and his classic study of religious experience.

Read the texts free

13 of William James’s works are free to read in full — public-domain English editions on Project Gutenberg, matched from Gutenberg’s own catalogue.

Every edition online — Open Library catalogues 631 works & editions, 84 of them free to read in full.

Influenced by

PeirceBritish empiricismDarwin

Influenced

pragmatism (Dewey)modern psychologyphenomenology and the philosophy of religion

In their words

“Truth is what works in the way of belief.”

— Pragmatism (paraphrase)

Legacy

He made pragmatism a living philosophy and founded modern psychology; his humane openness to experience still shapes both fields.

Further reading

Cross-checked against these authoritative references.

Authority records

Linked into the wider knowledge graph via Wikidata — the stable spine other sources hang off.