This first entrance into life of two persons, during which a woman is encouraged by the hope of happiness, by the still fresh sentiment of her married duty, by the wish to please, by the sense of virtue which begins to be so attractive as soon as it shows love to be in harmony with duty, is called the honeymoon.  How can it last long between two beings who are united for their whole life, unless they know each other perfectly?  If there is one thing which ought to cause astonishment it is this, that the deplorable absurdities which our manners heap up around the nuptial couch give birth to so few hatreds!  But that the life of the wise man is a calm current, and that of the prodigal a cataract; that the child, whose thoughtless hands have stripped the leaves from every rose upon his pathway, finds nothing but thorns on his return, that the man who in his wild youth has squandered a million, will never enjoy, during his life, the income of forty thousand francs, which this million would have provided—­are trite commonplaces, if one thinks of the moral theory of life; but new discoveries, if we consider the conduct of most men.  You may see here a true image of all honeymoons; this is their history, this is the plain fact and not the cause that underlies it.

But that men endowed with a certain power of thought by a privileged education, and accustomed to think deliberately, in order to shine in politics, literature, art, commerce or private life—­that these men should all marry with the intention of being happy, of governing a wife, either by love or by force, and should all tumble into the same pitfall and should become foolish, after having enjoyed a certain happiness for a certain time,—­this is certainly a problem whose solution is to be found rather in the unknown depths of the human soul, than in the quasi physical truths, on the basis of which we have hitherto attempted to explain some of these phenomena.  The risky search for the secret laws, which almost all men are bound to violate without knowing it, under these circumstances, promises abundant glory for any one even though he make shipwreck in the enterprise upon which we now venture to set forth.  Let us then make the attempt.

In spite of all that fools have to say about the difficulty they have had in explaining love, there are certain principles relating to it as infallible as those of geometry; but in each character these are modified according to its tendency; hence the caprices of love, which are due to the infinite number of varying temperaments.  If we were permitted never to see the various effects of light without also perceiving on what they were based, many minds would refuse to believe in the movement of the sun and in its oneness.  Let the blind men cry out as they like; I boast with Socrates, although I am not as wise as he was, that I know of naught save love; and I intend to attempt the formulation of some of its precepts, in order to spare married people the trouble of cudgeling their brains; they would soon reach the limit of their wit.