In House M.D., what recurring phrase expresses Dr. House’s view of human behavior?

“Everybody lies” is the recurring phrase expressing Dr. House’s view of human behavior in House M.D.

House uses the phrase to argue that patients, colleagues, and loved ones routinely conceal information or present events in ways that protect their privacy and self-image. For him, a patient’s account is evidence, but it is not automatically complete or reliable. That belief shapes the show’s diagnostic method.

The line also functions as a thematic summary of the series. House’s team must investigate behavior as well as symptoms, looking for hidden exposures, undisclosed habits, family information, and motives for withholding facts. The phrase therefore connects medical mystery with interpersonal conflict.

“Everybody lies” is not a formal medical rule, and the series treats it as House’s cynical generalization. Other characters often challenge his methods, especially when his suspicion becomes invasive or harmful. The phrase is closely associated with House, but it should not be confused with the separate medical maxim that extraordinary claims require extraordinary evidence.