The loveliest theories are being overthrown by these damned experiments; it's no fun being a chemist anymore. Justus von Liebig More Quotes by Justus von Liebig More Quotes From Justus von Liebig 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 exhaustedchocolateperfect The secret of all those who make discoveries is that they regard nothing as impossible. Justus von Liebig secretdiscoverytravel 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 glassesmirrorsscience 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 mountainviewsscience If you want to become a chemist, you will have to ruin your health. If you don't ruin your health studying, you won't accomplish anything these days in chemistry. Liebig's advice to Kekulé. Justus von Liebig ruinswantadvice A fact acquires its true and full value only through the idea which is developed from it. Justus von Liebig acquirefactsideas The more fodder, the more flesh; the more flesh, the more manure; the more manure, the more grain. Justus von Liebig foddergrainflesh 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 wisewantscience 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 historicaljudgingscience 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 menorderideas The progress of mankind is due exclusively to the progress of natural sciences, not to morals, religion or philosophy. Justus von Liebig philosophysciencereligion 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 soilearthlife There are various causes for the generation of force: a tensed spring, an air current, a falling mass of water, fire burning under a boiler, a metal that dissolves in an acid-one and the same effect can be produced by means of all these various causes. But in the animal body we recognise only one cause as the ultimate cause of all generation of force, and that is the reciprocal interaction exerted on one another by the constituents of the food and the oxygen of the air. The only known and ultimate cause of the vital activity in the animal as well as in the plant is a chemical process. Justus von Liebig springmeanfall 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 successfuldiscoveryanimal What struck me most in England was the perception that only those works which have a practical tendency awake attention and command respect, while the purely scientific, which possess far greater merit are almost unknown. And yet the latter are the proper source from which the others flow. Practice alone can never lead to the discovery of a truth or a principle. In Germany it is quite the contrary. Here in the eyes of scientific men no value, or at least but a trifling one, is placed upon the practical results. The enrichment of science is alone considered worthy attention. Justus von Liebig eyemenscience I have spent some months in England, have seen an awful lot and learned little. England is not a land of science, there is only a widely practised dilettantism, the chemists are ashamed to call themselves chemists because the pharmacists, who are despised, have assumed this name. Justus von Liebig learninglandscience But it must not be forgotten that ... glass and porcelain were manufactured, stuffs dyed and metals separated from their ores by mere empirical processes of art, and without the guidance of correct scientific principles. Justus von Liebig scienceknowledgeart In this apparatus is nothing new but its simplicity and thorough trustworthiness. On his revolutionary method of organic analysis. Justus von Liebig simplicityanalysisscience 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 mysteriousvegetablesanimal We may fairly judge of the commercial prosperity of a country from the amount of sulphuric acid it consumes. Justus von Liebig judgingsciencecountry
