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Justus von Liebig Biography

Justus von Liebig

Justus Freiherr von Liebig (12 May 1803 – 18 April 1873) was a German chemist who made major contributions to agricultural and biological chemistry, and was considered the founder of organic chemistry. As a professor at the University of Giessen, he devised the modern laboratory-oriented teaching method, and for such innovations, he is regarded as one of the greatest chemistry teachers of all time. He has been described as the "father of the fertilizer industry" for his emphasis on nitrogen and trace minerals as essential plant nutrients, and his formulation of the Law of the Minimum which described how plant growth relied on the scarcest nutrient resource, rather than the total amount of resources available. He also developed a manufacturing process for beef extracts, and founded a company, Liebig Extract of Meat Company, that later trademarked the Oxo brand beef bouillon cube. He popularized an earlier invention for condensing vapors, which came to be known as the Liebig Condenser.

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Justus von Liebig Quotes

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.

Carefully, Glasses, Mirrors, Order, Piece, Science

There is in the chemist a form of thought by which all ideas become visible in the mind as strains of an imagined piece of music. This form of thought is developed in Faraday in the highest degree, whence it arises that to one who is not acquainted with this method of thinking, his scientific works seem barren and dry, and merely a series of researches strung together, while his oral discourse when he teaches or explains is intellectual, elegant, and of wonderful clearness.

Barren, Developed, Ideas, Mind, Science, Thinking

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

Acquire, Developed, Fact, Facts, Full, Ideas

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.

Causes, Dissolves, Effect, Fall, Mean, Spring

The person who observes a clock, sees in it not only the pendulum swinging to and fro, and the dial-plate, and the hands moving, for a child can see all this; but he sees also the parts of the clock, and in what connexion the suspended weight stands to the wheel-work, and the pendulum to the moving hands.

Children, Connexion, Moving, Person, Science, See

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

Acid, Amount, Consumes, Country, Judging, Science

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.

Chocolate, Delicious, Engaged, Exhausted, Food, Perfect

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

Animal, Chemistry, Enlighten, Life, Mysterious, Vegetables

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.

Glasses, Medicine, Prepared, Present, Science, Solution

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.

Birth, Degree, Degrees, Growth, Science, Successfully

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.

Advice, Chemist, Health, Ruin, Ruins, Want

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

Anymore, Fun, Loveliest, Science, Theory

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.

Acquaintance, Advancement, Chemistry, Country, Knowledge, Mean

From one sublime genius-NEWTON-more light has proceeded than the labour of a thousand years preceding had been able to produce.

Light, Proceeded, Science, Thousand, Years

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

Discoveries, Discovery, Impossible, Regard, Secret, Travel

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.

Art, Correct, Knowledge, Principles, Science, Scientific

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

Analysis, Method, Revolutionary, Science, Simplicity, Trustworthiness

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.

Conviction, Independent, Material, Mean, Offers, Powerful

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.

Mountain, Place, Science, Truth, View, Views

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.

Animal, Discovery, Manufactures, Profitable, Successful, Trades

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