The scientist who yields anything to theology, however slight, is yielding to ignorance and false pretenses, and as certainly as if he granted that a horse-hair put into a bottle of water will turn into a snake.
Interpretation
This quote emphasizes the importance of scientific integrity and the rejection of unverified beliefs.
H. L. Mencken argues that science must stand firm against religious influence and other forms of superstition. By yielding even a little to theological concepts, scientists compromise their integrity, equating such concessions to accepting illogical beliefs, like the transformation of a horse-hair into a snake. This highlights the need for skepticism and critical thinking in the pursuit of knowledge.
In practice
In a lecture on the importance of scientific inquiry, this quote can reinforce the need to separate science from religious dogma.
I know a good many men of great learning-that is, men born with an extraordinary eagerness and capacity to acquire knowledge. One and all, they tell me that they can't recall learning anything of any value in school. All that schoolmasters managed to accomplish with them was to test and determine the amount of knowledge that they had already acquired independently-and not infrequently the determination was made clumsily and inaccurately.
It takes a long while for a naturally trustful person to reconcile himself to the idea that after all God will not help him
It is the theory of all modern civilized governments that they protect and foster the liberty of the citizen; it is the practice of all of them to limit its exercise, and sometimes very narrowly.
The central belief of every moron is that he is the victim of a mysterious conspiracy against his common rights and true deserts.
The cure for the evils of democracy is more democracy.
It is my conviction that no normal man ever fell in love, within the ordinary meaning of the term, after the age of thirty.
The march of science and technology does not imply growing intellectual complexity in the lives of most people. It often means the opposite.
If popular medicine gave the people wisdom as well as knowledge, it would be the best protection for scientific and well-trained physicians.
Theory is the essence of facts. Without theory scientific knowledge would be only worthy of the madhouse.
Bertrand Russell had given a talk on the then new quantum mechanics, of whose wonders he was most appreciative. He spoke hard and earnestly in the New Lecture Hall. And when he was done, Professor Whitehead, who presided, thanked him for his efforts, and not least for 'leaving the vast darkness of the subject unobscured'.
Almost everything that distinguishes the modern world from earlier centuries is attributable to science, which achieved its most spectacular triumphs in the seventeenth century.
As a scientist, I want to go to Mars and back to asteroids and the Moon because I'm a scientist. But I can tell you, I'm not so naive a scientist to think that the nation might not have geopolitical reasons for going into space.
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