No person shall be held to answer for a capital, or otherwise infamous crime, unless on a presentment or indictment of a Grand Jury, except in cases arising in the land or naval forces, or in the Militia, when in actual service in time of War or public danger; nor shall any person be subjectfor the same offence to be twice put in jeopardy of life or limb; nor shallbe compelled in any criminal case to be a witness against himself,