“The power of a theory is exactly proportional to the diversity of situations it can explain.”

“[Modern scientific] theories can necessarily never be more than hypothetical, since their starting-point is wholly empirical, for facts in themselves are always susceptible of diverse explanations and so never have been and never will be able to guarantee the truth of any theory.”

“If a theory purports to explain everything, then it is likely not explaining much at all.”

“The only situation which might justify panic is one in which panic is likely to help. Such a situation never arises. Though pretended panic may sometimes cause a useful diversion, real panic can never be anything other than a waste of energy.”

“Pseudoscience is embraced, it might be argued, in exact proportion as real science is misunderstood.”

“The vital power of an imaginative work demands a diversity within its unity; and the stronger the diversity the more massive the unity.”