But if you carefully consider the way in which a teacher instructs his pupil, if you consider how many different means he is obliged to make use of in order to show him the ideas he has of things, the comparisons he makes between them, the ways in which he judges them, and the other dispositions of his mind with regard to them, you will see that, but for sin, mothers would have had much less difficulty in revealing their thoughts and inner dispositions to their children than teachers do to their pupils, on the single assumption that the traces in the brain of mothers be stamped in the brain of their children, which seems to me to be evident enough from what I have just said.