By Asa Gray
Several months after the publication of Charles Darwin’s On the Origin of Species, the Harvard botany professor Asa Gray, a friend of Darwin’s, defended the book’s controversial theory of evolution.
We cling to a long-accepted theory, just as we cling to an old suit of clothes … New notions and new styles worry us, till we get well used to them, which is only by slow degrees …
Such being our habitual state of mind, it may well be believed that the perusal of the new book “On the Origin of Species by Means of Natural Selection” left an uncomfortable impression …
[But] surely the scientific mind of an age which contemplates the solar system as evolved from a common, revolving, fluid mass,—which, through experimental research, has come to regard light, heat, electricity, magnetism, chemical affinity, and mechanical power as varieties or derivative and convertible forms of one force, instead of independent species,—which has brought the so-called elementary kinds of matter, such as the metals, into kindred groups … the mind of such an age cannot be expected to let the old belief about species pass unquestioned.
Vol. 6, No. 33, pp. 109–116
by Percival Lowell
Following an Italian astronomer’s 1877 discovery of what appeared to be canals on the planet Mars, the astronomer Percival Lowell (brother of the poet Amy Lowell) began to investigate the possibility of Martian life. In a four-part Atlantic series, he laid out the evidence. Lowell later went on to predict the existence of Pluto, and to initiate the investigation that led to its discovery after his death.
Amid the seemingly countless stars that on a clear night spangle the vast dome overhead, there appeared last autumn to be a new-comer, a very large and ruddy one, that rose at sunset through the haze about the horizon. That star was the planet Mars, so conspicuous when in such position as often to be taken for a portent … From [Mars] … of all the heavenly bodies, may we expect first to learn something beyond celestial mechanics, beyond even celestial chemistry; something in answer to the mute query that man instinctively makes as he gazes at the stars, whether there be life in worlds other than his own.
Hitherto the question has received no affirmative reply, although the trend of all latter-day investigation has been to such affirmation; for science has been demonstrating more and more clearly the essential oneness of the universe. Matter proves to be common property. We have learnt that the very same substances with which we are familiar on this our earth, iron, magnesium, calcium, and the rest, are present in the far-off stars that strew the depths of space. Nothing new under the sun! Indeed, there is nothing new above it but ever-varying detail. So much for matter. As for mind beyond the confines of our tiny globe, modesty, backed by a probability little short of demonstration, forbids the thought that we are the sole thinkers in this great universe.
Vol. 75, No. 451, pp. 594–603
by John Burroughs
John Burroughs, a naturalist and popular essayist whose circle of friends included Walt Whitman, John Muir, and Theodore Roosevelt, noted in 1912 that the growing primacy of science was bringing about a new, more dispassionate and mechanistic view of the world.
With the rise of the scientific habit of mind has come the decline in great creative literature and art. With the spread of education based upon scientific principles, originality in mind and in character fades …
In the light of physical science our bodies are mere machines, and every emotion of our souls is accounted for by molecular changes in the brain-substance. Life itself is explained in terms of chemico- mechanical principles …
[But] let us give physical science its due … The sources and nature of disease, the remedial forces of nature, the chemical compounds, the laws of hygiene and sanitation, the value of foods, and a thousand other things beyond the reach of our unaided experience, are in the keeping of science … It is only when we arm our faculties with the ideas and with the weapons of science that we appreciate the grandeur of the voyage we are making on this planet. It is only through science that we know we are on a planet, and are heavenly voyagers at all.
Vol. 110, No. 3, pp. 322–331
by Werner Heisenberg
In 1959, the physicist and philosopher Werner Heisenberg—developer of the uncertainty principle and winner of a 1932 Nobel Prize—explained how atomic physics was reshaping modern notions of reality.