"It is the curse of minorities in this power-worshipping world that either from fear or from an uncertain policy of expedience they distrust their own standards and hesitate to give voice to their deeper convictions, submitting supinely to estimates and characterizations of themselves as handed down by a not unprejudiced dominant majority."

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One of the reasons for its success is that science has a built-in, error-correcting machinery at its very heart. Some may consider this an overbroad characterization, but to me every time we exercise self-criticism, every time we test our ideas against the outside world, we are doing science. When we are self-indulgent and uncritical, when we confuse hopes and facts, we slide into pseudoscience and superstition.

— Carl Sagan