Frederick II of Prussia Quotes

Avec toute l’algèbre du monde on n’est souvent qu’un sot lorsqu’on ne sait pas autre chose. Peut-être dans dix ans la société tirera-t-elle de l’avantage des courbes que des songe-creux d’algébristes auront carrées laborieusement. J’en félicite d’avance la postérité; mais, à vous parler vrai, je ne vois dans tous ces calculs qu’une scientifique extravagance. Tout ce qui n’est ni utile ni agréable ne vaut rien. Quant aux choses utiles, elles sont toutes trouvées; et, pour les agréables, j’espère que le bon goût n’y admettra point d’algèbre.

Do you think I take any pleasure in this dog's life, in seeing and causing death in people unknown to me, in losing friends and acquaintances daily, in seeing my reputation ceaselessly exposed to the caprices of fortune, in spending the whole year with uneasiness and apprehension, in continually risking my life and my fortune? I certainly know the value of tranquility, the charms of society, the pleasures of life, and I like to be happy as much as anybody. Although I desire all these good things, I will not buy them with baseness and infamy. Philosophy teaches us to do our duty, to serve our country faithfully at the expense of our blood and of our repose, to commit our whole being to it.

Diplomacy without arms is like music without instruments.

But a prince, when he binds himself, does not bind himself alone, otherwise he would be in the same position as a private individual. Instead, he exposes great countries and great provinces to a thousand misfortunes. Therefore, it is better that he should break his contract rather than that the people should perish.

Christianity… is an old metaphysical fiction, stuffed with fables, contradictions and absurdities: it was spawned in the fevered imagination of the Orientals, and then spread to our Europe, where some fanatics espoused it, where some intriguers pretended to be convinced by it and where some imbeciles actually believed it. Attributed in "The West and the Rest", by Niall Ferguson, Penguin 2011 (Kindle edition).

I feel the deepest veneration for the divine being, and therefore I am careful not to attribute to him unjust, fickle behavior, which would be condemned by the meanest mortal. Because of that, dear sister, I prefer not to believe that the almighty, benevolent being is at all concerned with human affairs. Rather I do attribute everything that happens to the living beings and certain effects of incalculable causes and I silently bow down before this being which is worthy of adoration, by admitting my ignorance concerning his ways, which his godly wisdom chose not to reveal.

If I had a province to punish, I would let it be governed by philosophers. Attributed in The Orthodox churchman's magazine; or, A Treasury of divine and useful knowledge (1803).

Ich empfinde für das göttliche Wesen die tiefste Verehrung und hüte mich deshalb sehr, ihm ein ungerechtes, wankelmütiges Verhalten zuzuschreiben, das man beim geringsten Sterblichen verurteilen würde. Aus diesem Grunde, liebe Schwester, glaube ich lieber nicht, dass das allmächtige, gütige Wesen sich im mindesten um die menschlichen Angelegenheiten kümmert. Vielmehr schreibe ich alles, was geschieht, den Geschöpfen und notwendigen Wirkungen unberechenbarer Ursachen zu und beuge mich schweigend vor diesem anbetungswürdigen Wesen, indem ich meine Unwissenheit über seine Wege eingestehe, die mir zu offenbaren seiner göttlichen Weisheit nicht gefallen hat.

I wanted to have a water jet in my garden: Euler calculated the force of the wheels necessary to raise the water to a reservoir, from where it should fall back through channels, finally spurting out in Sans Souci. My mill was carried out geometrically and could not raise a mouthful of water closer than fifty paces from the reservoir. Vanity of vanities! Vanity of geometry!

If my soldiers began to think, not one would remain in the ranks.

Like a long boat which follows in the wake of the warship to which it is tied.

The cruel man is of misanthropic temperament, and is a man of moods, oscillating from quiet brooding to sudden explosions. If a man like this does not fight this unhappy provision of his soul during his youth, under no circumstances could he avoid becoming furious - and foolish. There are those who would leave it up to God, but to ensure justice on the earth, and not fob it off to the Divinity, it is mandatory that people know both virtue and its benefits, since the virtues lead to unity among them, not the war of all against all. Therefore, it is absolutely necessary to conserve them, and show that crime can only return misfortunes and destruction, including of the criminal himself. Who is the last victim of his crimes.

They were stronger than Turk and Saracen, but not than Hunger and Disease. Leaders did not know then, as our little Friend at Berlin came to know, that “an Army, like a serpent, goes upon its belly."

[A] man with all the algebra in the world is often only an ass when he knows nothing else. Perhaps in ten years society may derive advantage from the curves which these visionary algebraists will have laboriously squared. I congratulate posterity beforehand. But to tell you the truth I see nothing but a scientific extravagance in all these calculations. That which is neither useful nor agreeable is worthless. And as for useful things, they have all been discovered; and to those which are agreeable, I hope that good taste will not admit algebra among them.

Truth to tell, treaties are only oaths of deception and faithlessness. The jurisprudence of sovereigns is customarily the law of the strongest.