“The phrase ‘popular science’ has in itself a touch of absurdity. That knowledge which is popular is not scientific.”

“I never said a word against eminent men of science. What I complain of is a vague popular philosophy which supposes itself to be scientific when it it really nothing but a sort of new religion and an uncommonly nasty one.”

“Popular medicine and popular morality belong together and ought not to be evaluated so differently as they still are: both are the most dangerous pseudo-sciences.”

“Agnosticism is of the essence of science, whether ancient or modern. It simply means that a man shall not say he knows or believes that which he has no scientific grounds for professing to know or believe. Consequently Agnosticism puts aside not only the greater part of popular theology, but also the greater part of anti-theology. On the whole, the "bosh" of heterodoxy is more offensive to me than that of orthodoxy, because heterodoxy professes to be guided by reason and science, and orthodoxy does not.”

“Knowledge will forever govern ignorance, and a people who mean to be their own governors, must arm themselves with the power knowledge gives. A popular government without popular information or the means of acquiring it, is but a prologue to a farce or a tragedy or perhaps both”

“As the popularity of science-fiction increases, so inevitably does the volume of clownish imprecation against it.”