In the criminal law, recklessness (sometimes also termed willful blindness which may have a different meaning in the United States) is one of the three possible classes of mental state constituting mens rea (the Latin for "guilty mind"). To commit an offence of ordinary as opposed to strict liability, the prosecution must be able to prove both an actus reus and a mens rea, i.e. a person cannot be guilty for thoughts alone. There must also be an appropriate intention, recklessness, or criminal negligence at the relevant time (see concurrence).