There must be no barriers for freedom of inquiry. There is no place for dogma in science. The scientist is free, and must be free to ask any question, to doubt any assertion, to seek for any evidence, to correct any errors.
— J Robert Oppenheimer
If liberty means anything at all, it means the right to tell people what they do not want to hear.
— George Orwell
An intelligent person is never afraid or ashamed to find errors in his understanding of things.
— Bryant H. McGill
The suppression of uncomfortable ideas may be common in religion or politics, but it is not the path to knowledge.
— Carl Sagan
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