"Answering the Question: What Is Enlightenment?", often referred to simply as "What Is Enlightenment?", is a 1784 essay by the philosopher Immanuel Kant. In the December 1784 publication of the Berlinische Monatsschrift, edited by Friedrich Gedike and Johann Erich Biester, Kant replied to the question posed a year earlier by the Reverend Johann Friedrich Zöllner, who was also an official in the Prussian government. Zöllner's question was addressed to a broad intellectual public community, in reply to Biester's essay titled "Proposal, not to engage the clergy any longer when marriages are conducted". A number of leading intellectuals replied with essays, of which Kant's is the most famous and has had the most impact. Kant's opening paragraph of the essay is a much-cited definition of a lack of enlightenment as people's inability to think for themselves due not to their lack of intellect, but lack of courage.