Quote by Kuhn, Thomas
"Once it has achieved the status of paradigm, a scientific theory is declared invalid only if an alternate candidate is available to take its place."
More from Kuhn, Thomas
"Discovery commences with the awareness of anomaly."
"The scientist who pauses to examine his own practice will discover equally unsuspected things about the nature of knowledge itself."
"A paradigm is what you think with, not what you think about."
"Truth emerges more readily from error than from confusion."