19th-century Scientist Quotes

A scientific man, in so far as he influences the progress of science cannot be far ahead of his time, and though his writings may be read and admired centuries after his death, he will have written in vain if he has not been appreciated by his contemporaries or by those who immediately followed.

Arthur Schuster

To get information for myself and for others direct from nature gives me so much more satisfaction than to be always learning it from others and for myself alone.

A simple calculation shows that from the classical theory follows that we should find a broadening of the beam with the maximum intensity on the place of the beam without field. However, from the quantum theory follows that we should find there no intensity at all, and deflected molecules on both sides. The beam should split up in two beams corresponding to the two orientations of the magnet. The experiment decided in favor of the quantum theory.

My whole existence has been devoted to science and to teaching, and these two intense passions have brought me very great joy.

The twofold nature of light as a light-wave and as a light-quantum is thus extended to electrons and, further, to atoms: their wave-nature is asserting itself more and more, theoretically and experimentally, as concurrent with their corpuscular nature.

Arnold Sommerfeld

The whole history of physics proves that a new discovery is quite likely lurking in the next decimal place.

Floyd K. Richtmyer

So long as you live and in whatever circumstances the kaleidoscope of life may place you, think for yourself and act in accordance with the conclusions of that thinking; avoid so far as possible drifting with the current of the mob or being too easily influenced by the outward manifestation of things. Take your own look beneath the surface and don't trust others to look for you. If you will follow this rule consistently, I am sure you will keep out of much trouble, will make the most out of your life and, what is more, will contribute most of value to the community life.

Frank B. Jewett

How quick are we to learn, that is, to imitate what others have done or thought before. And how slow to understand, that is, to see the deeper connections. Slowest of all, however, are we in inventing new connections or even applying old ideas in a new field.

Mathematical physics represents the purest image that the view of nature may generate in the human mind; this image presents all the character of the product of art; it begets some unity, it is true and has the quality of sublimity; this image is to physical nature what music is to the thousand noises of which the air is full...

Théophile de Donder

To serve in the scientific army, to have shown some initiative, and to be rewarded by the consciousness that in the eyes of his comrades he bears the accredited accolade of successful endeavor, is enough to satisfy the legitimate ambition of every earnest student of nature.

In Physics... as in every other science, common sense alone is not supreme; there must also be a place for Reason.

The numerical description of a vector requires three numbers, but nothing prevents us from using a single number for its symbolical designation. An algebra or analytical method in which a single letter or other expression is used to specify a vector may be called a vector algebra or vector analysis.

Josiah Willard Gibbs

Most scientists have little enthusiasm for history. The job of the scientist is to make discoveries and develop new ideas. When new ideas prove effective they tend to make old ones obsolete: thus it is not altogether unfair to say that the typical scientist is in the business of creating the future and destroying the past.

Edwin C. Kemble

From the point of view of the physicist, a theory of matter is a policy rather than a creed; its object is to connect or co-ordinate apparently diverse phenomena, and above all to suggest, stimulate and direct experiment. It ought to furnish a compass which, if followed, will lead to observer further and further into previously unexplored regions.

The careful experiments of Joule, who developed heat in various ways by the application of mechanical force, establish almost to a certainty, not only the possibility of increasing the quantity of heat, but also the fact that the newly-produced heat is proportional to the work expended in its production.

Rudolf Clausius

The face of Nature as presented to us is infinitely varied, but to those who love her it is ever beautiful and interesting.

A mathematician will recognize Cauchy, Gauss, Jacobi, of Helmholz after reading a few pages, just as musicians recognize, from the first few bars, Mozart, Beethoven, or Schubert.

Ludwig Boltzmann

I am much puzzled by some recent results as to the density of nitrogen, and shall be obliged if any of your chemical readers can offer suggestions as to the cause. According to two methods of preparation I obtain quite distinct values.

John Strutt, 3rd Baron Rayleigh

Everyone believes in the normal law, the experimenters because they imagine that it is a mathematical theorem, and the mathematicians because they think it is an experimental fact.

Gabriel Lippmann

Science is intelligence in action with no holds barred.

Percy Williams Bridgman

It is not easy to be sure whether the crucial idea is really one's own or has been unconsciously assimilated in talks with others.

William Lawrence Bragg

Mathematical physics is in the first place physics and it could not exist without experimental investigations.

But I should be very sorry if an interpretation founded on a most conjectural scientific hypothesis were to get fastened to the text in Genesis... The rate of change of scientific hypothesis is naturally much more rapid than that of Biblical interpretations, so that if an interpretation is founded on such an hypothesis, it may help to keep the hypothesis above ground long after it ought to be buried and forgotten.

James Clerk Maxwell

Concerning the intimate nature of heat, or of electricity, etc., I know nothing, any more than I know the intimate nature of any matter whatsoever, or of anything else.

Julius von Mayer

Don't be impatient with me. Bear in mind that I hop around among all of you big beasts like a harmless and helpless frog who is afraid of being squashed.