Authors:

That which the sober man keeps in his breast, the drunken man lets out at the lips. Astute people, when they want to ascertain a man's true character, make him drunk.

Martin Luther (1848). “The table talk or familiar discourse of Martin Luther, tr. by W. Hazlitt”, p.293
That which the sober man keeps in his breast, the drunken man lets out at the lips. Astute people, when they want to ascertain a man's true character, make him drunk.