Science is the acceptance of what works and the rejection of what does not. That needs more courage than we might think.
— Jacob Bronowski
Beware of false knowledge; it is more dangerous than ignorance.
— George Bernard Shaw
To kill an error is as good a service as, and sometimes even better than, the establishing of a new truth or fact.
— Charles Darwin
To free a person from error is to give, and not to take away.
— Arthur Schopenhauer
Valid criticism does you a favour.
— Carl Sagan
If liberty means anything at all, it means the right to tell people what they do not want to hear.
— George Orwell
Reasoning will never make a man correct an ill opinion, which by reasoning he never acquired.
— Jonathan Swift
No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.
— Karl Popper
I much prefer the sharpest criticism of a single intelligent man to the thoughtless approval of the masses.
— Johannes Kepler