Drive

In Malaysia, people who reach 18 years old are allow to drive and get driving license.
My brother who 18 years old has pass the driving test and obtain the driving license, but still he is lack of driving skills and experience. He asked father to teach him drive on the road by sitting next beside him, and father promised him to teach him this afternoon. During the lesson, my younger brother drove on the wrong side because he still lack of traffic knowledge.
Then father says to him ' You should drive on the right side of the road because that is what the law says, and the law is the law.' my young brother give a nod of understood.
(Petitio Principii)