In matters of the heart man is led by the heart and not by the head. (2)
And why not? Since

It is generally a sweet-heart, not a hard head, that a man wants. In short,

Men are oftener vanquished by a look than by logic; by a gracious smile than by good sense; by manner and even by dress than by mental development or depth. This is to say,

A man judges a woman by her appearance;

A woman judges a woman by her motives. (And

A woman judges of a woman's motives by what she knows of her own.)—So it comes about that,

To a man, a woman's heart is something mysterious. But

Women, who know their own hearts, have little difficulty in reading others'.

(1) It is (perhaps) highly unfortunate that to this word is attached a two-fold signification.

(2) Though, as Mr. Grant Allen has endeavored to show, this is a scientific a method as any.