Do not accept anything simply because it has been said by your teacher, or because it has been written in your sacred books, or because it has been believed by many, or because it has been handed down by your ancestors. Accept and live only according to what will enable you to see truth face to face.
The self taught man seldom knows anything accurately, and he does not know a tenth as much as he could have known if he had worked under teachers, and besides, he brags, and is the means of fooling other thoughtless people into going and doing as he himself has done.