Justus von Liebig Quotes

• Chocolate is a perfect food, as wholesome as it is delicious, a beneficent restorer of exhausted power...it is the best friend of those engaged in literary pursuits.

  Justus von Liebig

  Perfect, Chocolate, Exhausted

  49 Copiar cita

• The secret of all those who make discoveries is that they regard nothing as impossible.

  Justus von Liebig

  Travel, Discovery, Secret

  17 Copiar cita

• Observation is like a piece of glass, which, as a mirror, must be very smooth, and must be very carefully polished, in order that it may reflect the image pure and undistorted.

  Justus von Liebig

  Science, Glasses, Mirrors

  15 Copiar cita

• The progress of mankind is due exclusively to the progress of natural sciences, not to morals, religion or philosophy.

  Justus von Liebig

  Philosophy, Science, Religion

  5 Copiar cita

• The more fodder, the more flesh; the more flesh, the more manure; the more manure, the more grain.

  Justus von Liebig

  Flesh, Grain, Fodder

  Justus von Liebig (1863). “The natural laws of husbandry: Edited by John Blyth”, p.389

  9 Copiar cita

• The loveliest theories are being overthrown by these damned experiments; it's no fun being a chemist anymore.

  Justus von Liebig

  Fun, Science, Theory

  4 Copiar cita

• A fact acquires its true and full value only through the idea which is developed from it.

  Justus von Liebig

  Ideas, Facts, Acquire

  Justus von Liebig (1859). “Familiar Letters on Chemistry, in its relation to Physiology, Dietetics, Agriculture, Commerce and Political Economy: Edited by John Blyth”, p.58

  8 Copiar cita

• Si quieres ser químico, tendrás que arruinar tu salud. Si no te arruinas la salud estudiando, hoy en día no conseguirás nada en química. El consejo de Liebig a Kekulé.

  Justus von Liebig

  Advice, Want, Ruins

  52 Copiar cita

• We may fairly judge of the commercial prosperity of a country from the amount of sulphuric acid it consumes.

  Justus von Liebig

  Country, Science, Judging

  Justus von Liebig (1844). “Familiar Letters on Chemistry, and its relation to Commerce, Physiology, and Agriculture: Edited by John Gardner”, p.31

  4 Copiar cita

• A manure containing several ingredients acts in this wise: The effect of all of them in the soil accommodates itself to that one among them which, in comparison to the wants of the plant, is present in the smallest quantity.

  Justus von Liebig

  Wise, Science, Want

  8 Copiar cita

• Receiving a new truth is like adding a new sense.

  Justus von Liebig

  Truth, Lying, Receiving

  5 Copiar cita

• Chemistry, in its application to animals and vegetables. Endeavours jointly with physiology to enlighten us respecting the mysterious processes and sources of organic life.

  Justus von Liebig

  Animal, Vegetables, Mysterious

  Justus von Liebig (1844). “Familiar Letters on Chemistry, and its relation to Commerce, Physiology, and Agriculture: Edited by John Gardner”, p.10

  16 Copiar cita

• I have learnt that all our theories are not Truth itself, but resting places or stages on the way to the conquest of Truth, and that we must be contented to have obtained for the strivers after Truth such a resting place which, if it is on a mountain, permits us to view the provinces already won and those still to be conquered.

  Justus von Liebig

  Science, Views, Mountain

  10 Copiar cita

• If it is impossible to judge merit and guilt in the field of natural science, then it is not possible in any field, and historical research becomes an idle, empty activity.

  Justus von Liebig

  Science, Judging, Historical

  8 Copiar cita

• The finest imagination in the world could not have conceived of a better idea than the philosophers' stone to inspire the minds and faculties of men. Without it, chemistry would not be what it is today. In order to discover that no such thing as the philosopher's stone existed, it was necessary to ransack and analyze every substance known on earth. And in precisely this lay its miraculous influence.

  Justus von Liebig

  Hombres, Orden, Ideas

  6 Copiar cita

• In this apparatus is nothing new but its simplicity and thorough trustworthiness. On his revolutionary method of organic analysis.

  Justus von Liebig

  Science, Simplicity, Analysis

  4 Copiar cita

• By the deficiency or absence of one necessary constituent, all the others being present, the soil is rendered barren for all those crops to the life of which that one constituent is indispensable.

  Justus von Liebig

  Life, Earth, Soil

  Justus von Liebig (1855). “Principles of agricultural chemistry with special reference to the late researches made in England: By Justus von Liebig. (Ed. by William Gregory)”, p.31

  4 Copiar cita

• Since the discovery of oxygen the civilised world has undergone a revolution in manners and customs. The knowledge of the composition of the atmosphere, of the solid crust of the earth, of water, and of their influence upon the life of plants and animals, was linked to that discovery. The successful pursuit of innumerable trades and manufactures, the profitable separation of metals from their ores, also stand in the closest connection therewith.

  Justus von Liebig

  Successful, Animal, Discovery

  Justus von Liebig (1859). “Familiar Letters on Chemistry, in its relation to Physiology, Dietetics, Agriculture, Commerce and Political Economy: Edited by John Blyth”, p.5

  7 Copiar cita

• I would... establish the conviction that Chemistry, as an independent science, offers one of the most powerful means towards the attainment of a higher mental cultivation; that the study of Chemistry is profitable, not only inasmuch as it promotes the material interests of mankind, but also because it furnishes us with insight into those wonders of creation which immediately surround us, and with which our existence, life, and development, are most closely connected.

  Justus von Liebig

  Powerful, Mean, Independent

  David M. Knight, Justus von Liebig (1998). “The Development of Chemistry, 1789-1914: Familiar letters on chemistry”, p.1, Taylor & Francis

  5 Copiar cita

• Pero no hay que olvidar que ... el vidrio y la porcelana se fabricaban, los tejidos se teñían y los metales se separaban de sus minerales mediante meros procesos empíricos del arte, y sin la guía de principios científicos correctos.

  Justus von Liebig

  Arte, Conocimiento, Ciencia

  David M. Knight, Justus von Liebig (1998). “The Development of Chemistry, 1789-1914: Familiar letters on chemistry”, p.2, Taylor & Francis

  7 Copiar cita

• Without an acquaintance with chemistry, the statesman must remain a stranger to the true vital interests of the state, to the means of its organic development and improvement; ... The highest economic or material interests of a country, the increased and more profitable production of food for man and animals, ... are most closely linked with the advancement and diffusion of the natural sciences, especially of chemistry.

  Justus von Liebig

  Country, Knowledge, Mean

  Justus von Liebig (1859). “Familiar Letters on Chemistry, in its relation to Physiology, Dietetics, Agriculture, Commerce and Political Economy: Edited by John Blyth”, p.21

  4 Copiar cita

• A time will come, when fields will be manured with a solution of glass (silicate of potash), with the ashes of burnt straw, and with the salts of phosphoric acid, prepared in chemical manufactories, exactly as at present medicines are given for fever and goitre.

  Justus von Liebig

  Science, Medicine, Glasses

  Justus von Liebig (1842). “Chemistry in its applications to agriculture and physiology: By Justus Liebig. Edited from the manuscript of the author by Lyon Playfair”, p.176

  4 Copiar cita

• He pasado algunos meses en Inglaterra, he visto muchísimo y he aprendido poco. Inglaterra no es una tierra de ciencia, sólo hay un diletantismo ampliamente practicado, los químicos se avergüenzan de llamarse químicos porque los farmacéuticos, que son despreciados, han asumido este nombre.

  Justus von Liebig

  Learning, Science, Land

  54 Copiar cita

• Only about seventy years ago was chemistry, like a grain of seed from a ripe fruit, separated from the other physical sciences. With Black, Cavendish and Priestley, its new era began. Medicine, pharmacy, and the useful arts, had prepared the soil upon which this seed was to germinate and to flourish.

  Justus von Liebig

  Art, Science, Years

  Justus von Liebig (1859). “Familiar Letters on Chemistry, in its relation to Physiology, Dietetics, Agriculture, Commerce and Political Economy: Edited by John Blyth”, p.5

  7 Copiar cita

• In the progressive growth of astronomy, physics or mechanical science was developed, and when this had been, to a certain degree, successfully cultivated, it gave birth to the science of chemistry.

  Justus von Liebig

  Science, Growth, Degrees

  David M. Knight, Justus von Liebig (1998). “The Development of Chemistry, 1789-1914: Familiar letters on chemistry”, p.2, Taylor & Francis

  4 Copiar cita

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