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— Stephen Jay Gould"When we seek a textbook case for the proper operation of science, the correction of certain error offers far more promise than the establishment of probable truth. Confirmed hunches, of course, are more upbeat than discredited hypotheses. Since the worst traditions of "popular" writing falsely equate instruction with sweetness and light, our promotional literature abounds with insipid tales in the heroic mode, although tough stories of disappointment and loss give deeper insight into a methodology that the celebrated philosopher Karl Popper once labeled as "conjecture and refutation."
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Nothing is known in our profession by guess; and I do not believe, that from the first dawn of medical science to the present moment, a single correct idea has ever emanated from conjecture: it is right therefore, that those who are studying their profession should be aware that there is no short road to knowledge; and that observation on the diseased living, examination of the dead, and experiments upon living animals, are the only sources of true knowledge; and that inductions from these are the sole bases of legitimate theory.
— Astley Cooper
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Ourselves are cosmic and capacious beyond conjecture, and to experience some notion of the planetary perspective is the richest income from travelling. It takes all to inform and educate all. Sallies forth from our cramped firesides into other homes, other hearts, are wonderfully wholesome and enlarging. Travel opens prospects on all sides, widens our horizon, liberates the mind from geographical and conventional limitations, from local prejudices and national, showing the globe in its differing climates, zones, and latitudes of intelligence.
— Amos Bronson Alcott
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