Alciphron, or The Minute Philosopher is a philosophical dialogue by the 18th-century Irish philosopher George Berkeley wherein Berkeley combated the arguments of free-thinkers such as Mandeville and Shaftesbury against the Christian religion. It was first published in 1732. The dialogue is primarily between four characters, the free-thinkers Alciphron and Lysicles, Berkeley's spokesman Euphranor, and Crito, who serves as a spokesman for traditional Christianity. The mostly-silent narrator of the dialogue is given the name Dion.