Antoine Lavoisier Quotes
-
If everything in chemistry is explained in a satisfactory manner without the help of phlogiston, it is by that reason alone infinitely probable that the principle does not exist; that it is a hypothetical body, a gratuitous supposition; indeed, it is in the principles of good logic, not to multiply bodies without necessity.
-
I consider nature a vast chemical laboratory in which all kinds of composition and decompositions are formed.
-
The least degree of heat, as long as it is slightly higher than boiling water, suffices for uniting oxygen and hydrogen and carbon and for forming oil and water.
-
Nothing is lost, nothing is created, everything is transformed.
-
It is almost possible to predict one or two days in advance, within a rather broad range of probability, what the weather is going to be; it is even thought that it will not be impossible to publish daily forecasts, which would be very useful to soci.
-
Perhaps... some day the precision of the data will be brought so far that the mathematician will be able to calculate at his desk the outcome of any chemical combination, in the same way, so to speak, as he calculates the motions of celestial bodies.
-
Vegetation is the basic instrument the creator uses to set all of nature in motion.
-
In every combustion there is disengagement of the matter of fire or of light. A body can burn only in pure air [oxygen]. There is no destruction or decomposition of pure air and the increase in weight of the body burnt is exactly equal to the weight of air destroyed or decomposed. The body burnt changes into an acid by addition of the substance that increases its weight. Pure air is a compound of the matter of fire or of light with a base. In combustion the burning body removes the base, which it attracts more strongly than does the matter of heat, which appears as flame, heat and light.
-
Vegetables are organized bodies that grow on the dry areas of the globe and within its waters. Their function is to combine immediately the four elements and to serve as food for animals.
-
One succeeds in obtaining an equivalent production at a lower price by improving the arts, trades and agriculture and by developing the physical and moral qualities of workers, farmers and craftsmen.
-
One part is absorbed in the blood to compensate for the losses that are constantly taking place through respiration and perspiration, and all the material that Nature cannot use is rejected in the form of excrement.
-
One will not deny me, I trust, all the theory of oxidation and combustion, the analysis and decomposition of air by metals and combustible bodies, the theory of acidification, more precise knowledge on the nature of a great numbers of acids, notably.
-
Rouelle on the possibility of transmuting one element to another said, Ordinary chemists doubt the truth of the principles of this science, but they cannot judge in a matter entirely unknown to them. Although I do not wish to cast doubt on the testim.
-
Sulfur, when burning, absorbs oxygen gas; the resulting acid is considerably heavier than the sulfur burned; its weight is equal to the sum of weights of the sulfur burned and the oxygen absorbed.
-
Imagination, on the contrary, which is ever wandering beyond the bounds of truth, joined to self-love and that self-confidence we are so apt to indulge, prompt us to draw conclusions which are not immediately derived from facts.
-
Diminish the mass of evils that afflict the human species, increase enjoyment and well-being. And even if the new routes opened up could prolong the average life of mankind by only a few hours, or even a few days, then the scientist, too could aspire.
-
Let us hope especially that the enthusiasm and exaggerations, which so easily seize men congregated in large groups - affecting human passions and leading the crowd against its own interest, sweeping up in their whirlwind the sage and philosopher as.
-
We have succeeded in observing two laws of the utmost importance, the first is that the increase in the number of heart beats is in quite direct proportion to the sum of the weights lifted to a determined height, the second is that the quantity.
-
The rocks of the original soil, he wrote, are arranged in perpendicular layers or inclined towards the horizon. They are composed of quartz, granite, shale, slate and talcose.
-
The whole art of making experiments in chemistry is founded on the principle: we must always suppose an exact equality or equation between the principles of the body examined and those of the products of its analysis.
-
Languages are true analytical methods.
-
Languages are true analytical methods. Algebra, the means of expression which is the simplest, most exact and best adapted to its object, is both a language and an analytical method. In short, the art of reasoning can be reduced to a well-constructed.
-
Mathematicians come to the solution of a problem by the simple arrangement of the data, and reducing the reasoning to such simple operations, to judgments so brief, that they never lose sight of the evidence that serves as their guide.
-
We must trust to nothing but facts: These are presented to us by Nature, and cannot deceive. We ought, in every instance, to submit our reasoning to the test of experiment, and never to search for truth but by the natural road of experiment and observation.