Quote by Tycho Brahe
"Progress in knowledge requires that we question what we think we know."
More from Tycho Brahe
"Tycho, leave off thy vain designs, and listen to the voice of reason."
"I have not been crowned with success, but I have never lacked the courage to try."
"The heavens declare the glory of creation to those who take time to observe."
"Truth is not always what appears to be true, but what can be proven through careful observation."