Meaning

This statement treats dishonesty as far more than a social failing or a practical inconvenience. A false word is described as something that does damage from the inside, corrupting the character of the person who speaks it rather than simply misleading whoever hears it. The image is almost medicinal in reverse: just as a disease spreads through a body, habitual falsehood spreads through a person's inner life, gradually eroding their capacity for integrity and clear thinking.

Context

These words appear in Plato's Phaedo, a dialogue set on the day of Socrates' death. The conversation in that work ranges over questions of the soul, the afterlife, and the nature of truth, making the warning against false words especially pointed. Socrates argues there that clinging to poor reasoning or false beliefs is dangerous not just intellectually but morally, and this line captures that concern in a memorable, concentrated form. The Phaedo is one of the most carefully constructed of Plato's dialogues and is a primary source for Socratic ethics.

About the author

Socrates was a philosopher in fifth-century BCE Athens who made the examined life his central commitment. He believed that the health of the soul depended on a rigorous and honest relationship with truth, and he modeled this belief throughout his life and at his death. Because he wrote nothing himself, his ideas survive through Plato's dialogues, of which the Phaedo is among the most philosophically rich and personally moving.