A Quote by Antoine Lavoisier

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.

Antoine Lavoisier

Quote Topics

Always Analysis Art Between Body Chemistry Equality Equation Exact Experiments Founded Making Must Principle Principles Products Suppose Those Whole

Quote Author

Antoine Lavoisier
French - Scientist
August 26, 1743 - May 8, 1794

We may lay it down as an incontestible axiom, that, in all the operations of art and nature, nothing is created; an equal quantity of matter exists both before and after the experiment; the quality and quantity of the elements remain precisely the same; and nothing takes place beyond changes and modifications in the combination of these elements. Upon this principle the whole art of performing chemical experiments depends: We must always suppose an exact equality between the elements of the body examined and those of the products of its analysis.

Antoine Lavoisier

I suppose, indeed, that in public life, a man whose political principles have any decided character and who has energy enough to give them effect must always expect to encounter political hostility from those of adverse principles.

Thomas Jefferson

As a science, logic institutes an analysis of the process of the mind in reasoning, and investigating the principles on which argumentation is conducted; as an art, it furnishes such rules as may be derived from those principles, for guarding against erroneous deductions.

Richard Whately

As in Mathematicks, so in Natural Philosophy, the Investigation of difficult Things by the Method of Analysis, ought ever to precede the Method of Composition. This Analysis consists in making Experiments and Observations, and in drawing general Conclusions from them by Induction, and admitting of no Objections against the Conclusions, but such as are taken from Experiments, or other certain Truths. For Hypotheses are not to be regarded in experimental Philosophy.

Isaac Newton

What will solve our problems is a specific set of ideas built on bedrock principles that made America the greatest nation to begin with and applying those principles to the unique challenges of this new century. And those principles are not complicated. It begins with a notion that this nation was founded on a powerful spiritual principle, that our rights do not come from government. Our rights do not come from our laws. Our rights do not come from our leaders. Our rights come from God.

Marco Rubio

Our allegiance is to the principles always, and not to the persons. Persons are but the embodiments, the illustrations of the principles. If the principles are there, the persons will come by the thousands and millions. If the principle is safe, persons like Buddha will be born by the hundreds and thousands. But if the principle is lost and forgotten and the whole of national life tries to cling round a so-called historical person, woe unto that religion, danger unto that religion!

Swami Vivekananda

Chemistry has the same quickening and suggestive influence upon the algebraist as a visit to the Royal Academy, or the old masters may be supposed to have on a Browning or a Tennyson. Indeed it seems to me that an exact homology exists between painting and poetry on the one hand and modem chemistry and modem algebra on the other. In poetry and algebra we have the pure idea elaborated and expressed through the vehicle of language, in painting and chemistry the idea enveloped in matter, depending in part on manual processes and the resources of art for its due manifestation.

James Joseph Sylvester

Honesty is a principle. Service is a principle. Love is a principle. Hard work is a principle. Respect, gratitude, moderation, fairness, integrity, loyalty, and responsibility are principles. There are dozens and dozens more. They are not hard to identify. Just as a compass always points to true north, your heart will recognize true principles.

Sean Covey

For chemistry is no science form'd à priori; 'tis no production of the human mind, framed by reasoning and deduction: it took its rise from a number of experiments casually made, without any expectation of what follow'd; and was only reduced into an art or system, by collecting and comparing the effects of such unpremeditated experiments, and observing the uniform tendency thereof. So far, then, as a number of experimenters agree to establish any undoubted truth; so far they may be consider'd as constituting the theory of chemistry.

Herman Boerhaave

The nation was founded and "dedicated," to use Lincoln's language in the "Gettysburg Address," to equality as a "self-evident truth." But this very principle of equality, as Lincoln also noted, was a "proposition." To make it a reality remained "the unfinished work" of Americans.

Ronald Takaki

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.

Antoine Lavoisier

The key message is I'm always trying to hope the Singaporeans will understand, is a question of every government must be... examined based on certain very fundamental principles to have a good government. You must have transparency.

Tan Cheng Bock

Because we aren't certain about the effects of GMOs, we must consider one of the guiding principles in science, the precautionary principle. Under this principle, if a policy or action could harm human health or the environment, we must not proceed until we know for sure what the impact will be. And it is up to those proposing the action or policy to prove that it is not harmful.

David Suzuki

What can be accomplished by a few principles is not effected by many. But it seems that everything we see in the world can be accounted for by other principles, supposing God did not exist. For all natural things can be reduced to one principle, which is nature, and all voluntary things can be reduced to one principle, which is human reason, or will. Therefore there is no need to suppose God's existence.

Thomas Aquinas

There are three principles in a man's being and life, the principle of thought, the principle of speech, and the principle of action. The origin of all conflict between me and my fellow-men is that I do not say what I mean and I don't do what I say.