Arthur Schopenhauer on Sex Disturbing Everything"Metaphysics of the Love of the Sexes" in The World as Will and Idea (K. Paul, Trench, Trübner & Co.: 1906), p. 339.
The sexual impulse in all its degrees and nuances plays not only on the stage and in novels, but also in the real world, where, next to the love of life, it shows itself the strongest and most powerful of motives, constantly lays claim to half the powers and thoughts of the younger portion of mankind, to the ultimate goal of almost all human efforts, interrupts the most serious occupations every hour, sometimes embarrasses for a while even the greatest minds, does not hesitate to intrude with its trash, interfering with the negotiations of statesmen and the investigations of men of learning, knows how to slip its love letters and locks of hair even into ministerial portfolios and philosophical manuscripts, and no less devises daily the most entangled and the worst actions, destroys the most valuable relationships, breaks the firmest bonds, demands the sacrifice sometimes of life or health, sometimes of wealth, rank, and happiness, nay, robs those who are otherwise honest of all conscience, makes those who have hitherto been faithful, traitors; accordingly on the whole, appears as a malevolent demon that strives to pervert, confuse and overthrow everything; — then one will be forced to cry, Wherefore all this noise? Wherefore the straining and storming, the anxiety and want? It is merely a question of every Hans finding his Goethe. Why should such a trifle play so important a part, and constantly introduce disturbance and confusion into the well-regulated life of man?
[Editor: Schopenahauer goes on to answer his own question — why all the straining and storming? — saying that sex is what determines each successive generation, and that is of the highest consequence.]