From the preface to the fourth edition of Volume 1-
My attempt in the following volume is to the suggest to parents and teachers a method of education resting upon a basis of natural law; and to touch, in this connection, upon a mother’s duties to her children. In venturing to speak on this latter subject, I do so with the sincerest deference to mothers, believing that, in the words of a wise teacher of men, “the woman receives from the Spirit of God Himself the intuitions into the child’s character, the capacity of appreciating its strength and its weakness, the faculty of calling forth the one and sustaining the other, in which lies the mystery of education, apart from which all its rules and measures are utterly vain and ineffectual.” But just in proportion as a mother has this peculiar insight as regards her own children she will, I think, feel her need of a knowledge of the general principles of education, founded upon the nature and the needs of all children. And this knowledge of the science of education, not the best of mothers will get from above, seeing that we do not often receive as a gift that which we have the means of getting by our own efforts.