The sexual organs of man and woman are wonderfully adapted to each other, and have a perfect power of mutual attraction. Nature sacrifices every thing to reproduction: it is thus that we enjoy all strength, vigor and beauty, so as to excite us to contribute to the procreation of our species; and thus that such exquisite pleasure is associated with the copulative act. It is for this reason also that we experience so many sweet illusions in the brilliant season of our amours, and that we give way to others when our reproductive powers have failed. In a word, Nature always regards the species, and never the individual; and whatever we may say or think of our superiority over inferior animals, we cannot conceal from ourselves the fact that, like the brutes, we are influenced in our unions by the pleasure of sexual intercourse. It is useless to deny that the majority of marriages which are apparently based on the sentiment called love, are nothing more than the result of an involuntary obedience to the imperious voice of our sexual organs. A man admires the graceful figure, the voluptuous form, and the general female graces of a woman, and he at once desires to possess her person. This induces him to cultivate her acquaintance, and unless he finds something in her disposition positively disagreeable, ten to one he will offer her marriage. Who will deny that sexual desire was the moving cause of this connection? A woman meets a man of fine figure, noble gait and manner, broad chest, and elevated head, furnished with a luxuriant growth of hair. His eyes are full of fire, and he is amiable, gallant and polite. She at once feels a thrilling desire to become better acquainted with him. What is that but a sexual yearning? Thus far, certainly, no sentimental collusion can have occurred between them.