Brigham Young, Journal of Discourses

The duty of the mother is to watch over her children, and give them their early education, for impressions received in infancy are lasting. You know, yourselves, by experience, that the impressions you have received in the dawn of your mortal existence, bear, to this day, with the greatest weight upon your mind. It is the experience of people generally, that what they imbibe from their mothers in infancy, is the most lasting upon the mind through life... Children have all confidence in their mothers; and if mothers would take proper pains, they can instill into the hearts of their children what they please.