19th-century Scientist Quotes

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.

It is dangerous to believe hastily that anything is either possible or impossible, for there are few scientific assertions which have been proved to universal satisfaction. Our firmest scientific beliefs of today may be shattered tomorrow.

Robert H. Goddard

The French Academy of Sciences is the receptacle of a crowd of mediocrities and ignoramuses whose places have been made as college professors, herb collectors, village veterinarians and assistant engineers of bridges and roads.

The physicist in preparing for his work need three things, mathematics, mathematics, and mathematics.

Wilhelm Röntgen

A crystal and a cell, A jelly fish and a saurian And caves where cavemen dwell. Then a sense of law and beauty, And a face turned from the clod. Some call it evolution And others call it God.

Robert Andrews Millikan

Science aims at a vigorous adult, intelligent, serpentlike wisdom, and active interference with the course of nature; religion aims at a meek, receptive, child-hearted attitude of dovelike resignation to the Divine will.

You are invited to come to see the Earth turn, tomorrow, from three to five, at Meridian Hall of the Paris Observatory.

Only a small part of scientific progress has resulted from planned search for specific objectives. A much more important part has been made possible by the freedom of the individual to follow his own curiosity.

Irving Langmuir

A physicist must be able to saw with a file and to file with a saw.

Science makes people reach selflessly for truth and objectivity; it teaches people to accept reality, with wonder and admiration, not to mention the deep awe and joy that the natural order of things brings to the true scientist.

Humility is indeed a distinctive quality of every scientific mind; not humility before man and man-made images, but before the marvellous universe in which the Earth is only a particle.

Henry Augustus Rowland

It is more important to know the properties of chlorine than the improprieties of Claudius!

Frederick Lindemann, 1st Viscount Cherwell

We don't want support for scientific research just to keep scientists busy: we want scientists to be looked upon by the public as people who can do things for them that they can't do themselves.

John Cunningham McLennan

In principio it is impossible to prove from experiments that something is non-existent.

Felix Ehrenhaft

The phenomenon of the production of motion by heat has not been considered in a sufficiently general way... It is necessary to establish proofs applicable not only to steam engines but to all other heat-engines, irrespective of the working substance and the manner in which it acts.

Nicolas Léonard Sadi Carnot

Generally speaking it is better, where possible in natural science, to study objects of research independently of the accidents of their historical development.

I shall lose no time in repeating and extending these experiments, being satisfied that the grand agents of nature are by the Creator's fiat indestructible, and that whatever mechanical force is expended an exact equivalent of heat is always obtained.

James Prescott Joule

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.

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

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.

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

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

Floyd K. Richtmyer

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

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

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.