CHAPTER III—GENERAL RULES AS TO CRIMINAL RESPONSIBILITY. 6. Ignorance of law. Ignorance of the law does not afford any excuse for any act or omission which would otherwise constitute an offence unless knowledge of the law by the offender is expressly declared to be an element of the offence. 7. Claim of right. A person is not criminally responsible in respect of an offence relating to property if the act done or omitted to be done by the person with respect to the property was done in the exercise of an honest claim of right and without intention to defraud. 8. Intention and motive. (1) Subject to the express provisions of this Code relating to negligent acts and omissions, a person is not criminally responsible for an act or omission which occurs independently of the exercise of his or her will or for an event which occurs by accident. (2) Unless the intention to cause a particular result is expressly declared to be an element of the offence constituted, in whole or in part, by an act or omission, the result intended to be caused by an act or omission is immaterial. (3) Unless otherwise expressly declared, the motive by which a person is induced to do or omit to do an act, or to form an intention, is immaterial so far as regards criminal responsibility. 9. Mistake of fact. (1) A person who does or omits to do an act under an honest and reasonable, but mistaken, belief in the existence of any state of things is not criminally responsible for the act or omission to any greater extent than if the real state of things had been such as he or she believed to exist. (2) The operation of this section may be excluded by the express or implied provisions of the law relating to the subject.