This then must certainly be looked upon as one of the most powerfully operating causes of the intellectual differences between the sexes. But it is only a proximate cause, and the question immediately presents itself, how has it happened that the young men have been so much more universally and deeply educated in all ages and countries? And here we are led to a consideration of the effects of that more enlarged and general education which arises from physical and moral causes, independently of mere teachers. I have already explained the causes which assign to woman the domestic sphere, and all the occupations pertaining to it, and to man the out of door world with all the business, occupations, and cares pertaining to its management. These separate, distinct, and widely different spheres in which the two sexes move, as we have already observed, generate characters distinctly marked and widely different. And it is not to be wondered at that these characters, so totally different, belonging to persons moving in different spheres, should require different kinds and degrees of intellectual powers. Woman is domestic in her habits, she requires therefore a knowledge of all those minutiæ--all those details which can best befit her for her domestic occupations. She is more concerned with the individual than with the multitude. She feels more deeply interested in a mere family, than in a whole nation. Hence she studies individual character, individual disposition, and the motives by which individuals are governed, more than she does the general traits of the multitude, the distinctive character of nations, or the great and general principles by which they are governed. Woman is the delight and ornament of the social circle. She therefore aims to acquire that knowledge, and become possessed of those graces and accomplishments which may cause her to be admired by all while she is walking the golden round of her pleasures and duties; her object is rather to please and fascinate the imagination than to instruct the understanding. She is more humane, more tender, sympathetic, and moral than man, and, consequently, she is more interested in the study of the feelings and the passions than in that of the understanding and the intellectual powers. In general she is more eager for the perusal of all that addresses itself to the fancy and the feelings, such as novels, romances, and poems, than for the study of philosophy and science. In fine she is much more literary than scientific. _Abstraction and Generalization_.