After the discovery was made here who I was, Mr Boffin, still restless on the subject, told me, upon certain conditions impossible for such a hound as you to appreciate, the secret of that Dutch bottle.
— from Our Mutual Friend by Charles Dickens

What experience teaches me under certain circumstances, it must always teach me and everybody; and its validity is not limited to the subject nor to its state at a particular time.
— from Kant's Prolegomena to Any Future Metaphysics by Immanuel Kant

That grand passion which is at once the foundation and the power of a sceptic’s existence, and is both more enlightened and more despotic than he is himself, drafts the whole of his intellect into its service; it makes him unscrupulous; it gives him courage to employ unholy means; under certain circumstances it does not begrudge him even convictions.
— from The Antichrist by Friedrich Wilhelm Nietzsche

With certain minds, under certain conditions, it becomes absolutely irresistible.
— from The Works of Edgar Allan Poe — Volume 2 by Edgar Allan Poe

They are in themselves generally useless, like footprints; and yet almost any sign of man's passage might, under certain conditions, interest a man.
— from The Life of Reason: The Phases of Human Progress by George Santayana

The cost of management under competitive conditions is far higher than it would be under coöperative.
— from Twentieth Century Socialism: What It Is Not; What It Is: How It May Come by Edmond Kelly

They should prevent our rushing to the conclusion that because a cat, or dog, or horse behaves in a sensible manner under certain conditions, it is exercising intelligence.
— from Jungle Folk: Indian Natural History Sketches by Douglas Dewar

He is made to drag out an existence under most unnatural conditions, conditions in which every effort he makes towards self-improvement is a useless one, every aspiration is routed, the natural affections crave in vain for an object to fasten upon, and where an artificial atavistic process is set in motion so powerful as to defy the resistance of all in time.
— from A Plea for the Criminal Being a reply to Dr. Chapple's work: 'The Fertility of the Unfit', and an Attempt to explain the leading principles of Criminological and Reformatory Science by James Leslie Allan Kayll

If the conductivity of a given weight of hydrogen chloride, for instance, is measured under comparable conditions, it should be found to be greater, the more completely the acid is ionized.
— from The Elements of Qualitative Chemical Analysis, vol. 1, parts 1 and 2. With Special Consideration of the Application of the Laws of Equilibrium and of the Modern Theories of Solution. by Julius Stieglitz

I do not mean that there may not be beauty in the expression of universals; in fact, I have explicitly maintained that there may, under certain conditions; I am simply insisting that beauty may belong to expressions of the individual also, and that you cannot reduce these to mere illustrations of universal ideas.
— from The Principles of Aesthetics by De Witt H. (De Witt Henry) Parker

Accordingly, after I had made my morning meal upon corn cakes, I sallied out in the direction which I had seen the slaves of the plantation take at the time they left the house at daylight, and following a path through a small field of corn, which was so tall as to prevent me from seeing [Pg 74] beyond it, I soon arrived at the field in which the people were at work with hoes amongst the cotton, which was about two feet and a half high, and had formed such long branches, that they could no longer plough in it without breaking it.
— from Fifty Years in Chains; or, the Life of an American Slave by Charles Ball

The density of gases, D, is also taken in reference to the density of hydrogen, and the volume V in metrical units (cubic centimetres), if it be a matter of absolute magnitudes of volumes, and if it be a matter of chemical transformations—that is, of relative volumes—then the volume of an atom of hydrogen, or of one part by weight of hydrogen, is taken as unity, and all volumes are expressed according to these units.
— from The Principles of Chemistry, Volume I by Dmitry Ivanovich Mendeleyev

"What a chance they are letting slip through their fingers of getting the most unexacting, contented creature in the world to minister to their tiresome wants.
— from A Houseful of Girls by Sarah Tytler

A few sounds, however, made under certain conditions, I have reason to believe bear upon this subject, but I am not yet ready to announce my opinions thereon.
— from The Speech of Monkeys by R. L. (Richard Lynch) Garner