“Extinguished theologians lie about the cradle of every science as the strangled snakes beside that of Hercules; and history records that whenever science and orthodoxy have been fairly opposed, the latter has been forced to retire from the lists, bleeding and crushed if not annihilated; scotched, if not slain.”

“Though biomedical science has vastly increased mankind’s average life expectancy, the maximum has not changed in verifiable recorded history.”

“The tradition of Islamic science of course gradually weakened but it did not decay as rapidly as some people have claimed in the West. It continued on into the 10th, 11th and 12th Islamic centuries especially in the fields of medicine and pharmacology. If one is going to talk about the decay of the Islamic sciences, it is only of the last two or three centuries that one should speak if one takes the whole of the Islamic world into consideration. And one should not be ashamed of that fact because no civilization in the history of science has always been avidly interested in the natural sciences throughout its whole history. There have been periods of greater interest and those of lesser interest in every civilization, and there is no reason why one should equate the gradual loss of impetus in the cultivation of the sciences in the Islamic world with an automatic decadence of that civilization. This is a modern, Western view which equates civilization with science as understod in the modern sense.”

“I want to pause here and talk about this notion of consensus, and the rise of what has been called consensus science. I regard consensus science as an extremely pernicious development that ought to be stopped cold in its tracks. Historically, the claim of consensus has been the first refuge of scoundrels; it is a way to avoid debate by claiming that the matter is already settled. Whenever you hear the consensus of scientists agrees on something or other, reach for your wallet, because you're being had.Let's be clear: the work of science has nothing whatever to do with consensus. Consensus is the business of politics. Science, on the contrary, requires only one investigator who happens to be right, which means that he or she has results that are verifiable by reference to the real world. In science consensus is irrelevant. What is relevant is reproducible results. The greatest scientists in history are great precisely because they broke with the consensus.There is no such thing as consensus science. If it's consensus, it isn't science. If it's science, it isn't consensus. Period.”

“The history of science, like the history of all human ideas, is a history of irresponsible dreams, of obstinacy, and of error. But science is one of the very few human activities — perhaps the only one — in which errors are systematically criticized and fairly often, in time, corrected. This is why we can say that, in science, we often learn from our mistakes, and why we can speak clearly and sensibly about making progress there.”

“The decadence which did occur in the Islamic world belongs to a much later period of Islamic history than is usually claimed. This fact would be fully substantiated if the integral history of Islamic science and civilization were to be written one day. Unfortunately to this day such a detailed history does not exist and moreover much of the scholarly work that has been done in this field has been carried out by Western scholars who have been naturally primarily interested in those aspects of the Islamic sciences that have influenced the West. It remains the task of Muslims scholars and scientists to look upon the whole of this scientific tradition from the point of view of Islam and the inner dynamics of Islamic history itself.”