that way madness lies

that way madness lies

or

that way lies madness

People say that way madness lies or that way lies madness to mean that doing a particular thing will cause you to go crazy. I've given up trying to tidy up after him. That way madness lies. Lie to anyone you want, but don't lie to yourself. That way lies madness. Note: People also say this way madness lies or this way lies madness. I keep thinking about Richard, and this way lies madness.
See also: lie, madness, that, way

that way madness lies

it is ill-advised to pursue a particular course of action as it will cause distress or anxiety.
This phrase is a quotation from King Lear, taken from the speech in which Lear shies away from contemplating the ingratitude of his daughters Regan and Goneril.
See also: lie, madness, that, way