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Home > Dictionary of Science Quotations > Scientist Names Index M > Dmitry Ivanovich Mendeleev Quotes

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Dmitry Ivanovich Mendeleev
(8 Feb 1834 - 2 Feb 1907)

Russian chemist.


Science Quotes by Dmitry Ivanovich Mendeleev (5 quotes)

If all the elements are arranged in the order of their atomic weights, a periodic repetition of properties is obtained. This is expressed by the law of periodicity.
— Dmitry Ivanovich Mendeleev
Principles of Chemistry (1905), Vol. 2, 17.
Science quotes on:  |  Arrangement (25)  |  Element (68)  |  Periodic Table (10)  |  Periodicity (2)  |  Property (46)  |  Repetition (18)

The edifice of science not only requires material, but also a plan. Without the material, the plan alone is but a castle in the air—a mere possibility; whilst the material without a plan is but useless matter.
— Dmitry Ivanovich Mendeleev
The Principles of Chemistry (1897), Vol. 1‎, ix.
Science quotes on:  |  Edifice (8)  |  Material (60)  |  Plan (40)  |  Possibility (70)  |  Requirement (27)  |  Science (875)  |  Uselessness (19)

There must be some bond of union between mass and the chemical elements; and as the mass of a substance is ultimately expressed (although not absolutely, but only relatively) in the atom, a functional dependence should exist and be discoverable between the individual properties of the elements and their atomic weights. But nothing, from mushrooms to a scientific dependence can be discovered without looking and trying. So I began to look about and write down the elements with their atomic weights and typical properties, analogous elements and like atomic weights on separate cards, and soon this convinced me that the properties of the elements are in periodic dependence upon their atomic weights; and although I had my doubts about some obscure points, yet I have never doubted the universality of this law, because it could not possibly be the result of chance.
— Dmitry Ivanovich Mendeleev
Principles of Chemistry (1905), Vol. 2, 18.
Science quotes on:  |  Atom (164)  |  Bond (11)  |  Chance (77)  |  Dependence (21)  |  Discovery (360)  |  Doubt (67)  |  Element (68)  |  Exist (13)  |  Experiment (369)  |  Look (32)  |  Mass (23)  |  Property (46)  |  Substance (39)  |  Try (34)  |  Union (6)

When the elements are arranged in vertical columns according to increasing atomic weight, so that the horizontal lines contain analogous elements again according to increasing atomic weight, an arrangement results from which several general conclusions may be drawn.
— Dmitry Ivanovich Mendeleev
'The Relations of the Properties to the Atomic Weights of the Elements', Zeitschrift fur Chemie, 1869.
Science quotes on:  |  Analogy (26)  |  Arrangement (25)  |  Atomic Weight (5)  |  Column (4)  |  Conclusion (74)  |  Element (68)  |  Periodic Table (10)  |  Result (129)  |  Row (2)

Why do they [Americans] quarrel, why do they hate Negroes, Indians, even Germans, why do they not have science and poetry commensurate with themselves, why are there so many frauds and so much nonsense? I cannot soon give a solution to these questions ... It was clear that in the United States there was a development not of the best, but of the middle and worst sides of European civilization; the notorious general voting, the tendency to politics... all the same as in Europe. A new dawn is not to be seen on this side of the ocean.
— Dmitry Ivanovich Mendeleev
The Oil Industry in the North American State of Pennsylvania and in the Caucasus (1877). Translated by H. M. Leicester, from the original in Russian, in 'Mendeleev's Visit to America', Journal of Chemical Education (1957), 34, 333.
Science quotes on:  |  America (41)  |  Best (42)  |  Civilization (90)  |  Dawn (2)  |  Development (122)  |  Europe (16)  |  Fraud (6)  |  Germany (7)  |  India (3)  |  Middle (7)  |  Negro (3)  |  Nonsense (13)  |  Notorious (3)  |  Poetry (63)  |  Politics (52)  |  Question (159)  |  Science (875)  |  Solution (109)  |  Tendency (18)  |  United States (12)  |  Vote (7)  |  Worst (7)


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