Kant Answers the Question "What Is Enlightenment?"
Sapere aude, dare to know: enlightenment means daring to think for yourself instead of following a guardian
Quick facts
- Author
- Immanuel Kant
- Work
- An Answer to the Question: What Is Enlightenment?
- Published
- 1784
- Motto
- Sapere aude (dare to know)
What happened
Immanuel Kant published his short essay An Answer to the Question: What Is Enlightenment? in 1784, responding to a public debate already underway in Berlin's periodicals. Kant defined enlightenment as humanity's emergence from a self-imposed immaturity, meaning the inability to use one's own understanding without being directed by someone else, whether a pastor, a doctor, or a book. He located the cause of that immaturity not in a lack of intelligence but in a lack of resolve and courage, and gave the essay its motto, Sapere aude, "dare to know," have the courage to use your own reason. Kant argued a genuinely enlightened age required freedom to reason and argue in public, even while individuals still had to obey the specific laws and duties of their office in private.
Why it matters
Kant's essay became the period's most quoted self-definition, giving the Enlightenment a compact statement of its own goal that later historians and philosophers still use as the standard reference point when explaining what the movement was actually trying to do.
How we know
The essay survives in Kant's original German and in English translations; the Internet History Sourcebooks Project at Fordham University hosts the English text, and the Stanford Encyclopedia of Philosophy's entry on Kant dates the essay to 1784.
Sources
- Stanford Encyclopedia of Philosophy. Immanuel Kant · Reputable sourceplato.stanford.edu · The domain "plato.stanford.edu" is on our Reputable source registry. · Link is live and its text matches the event's key terms (Jul 2026)
- Immanuel Kant, Internet History Sourcebooks Project, Fordham University. What Is Enlightenment? · Primary source (author-declared)sourcebooks.web.fordham.edu · Cited as a "primary" source (no stronger domain match). · Link is live and its text matches the event's key terms (Jul 2026)
See something wrong? . Corrections with a source get fixed fastest.
Part of a timelineThe Enlightenment23 events · How a new faith in reason and evidence remade philosophy, science, and government between 1620 and 1800View all →