Justus von Liebig Quotes - Page 2

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• 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

  Spring, Fall, Mean

  7 Copy quote

• I will now direct the attention of scientists to a previously unnoticed cause which brings about the metamorphosis and decomposition phenomena which are usually called decay, putrefaction, rotting, fermentation and moldering. This cause is the ability possessed by a body engaged in decomposition or combination, i.e. in chemical action, to give rise in a body in contact with it the same ability to undergo the same change which it experiences itself.

  Justus von Liebig

  Science, Giving, Attention

  57 Copy quote

• 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.

  Justus von Liebig

  Science, Thinking, Ideas

  52 Copy quote

• 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 Copy quote

• 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.

  Justus von Liebig

  Children, Moving, Science

  4 Copy quote

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

  Justus von Liebig

  Science, Light, Years

  5 Copy quote

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