"He was burned at the stake in Rome's Flower Market in the year 1600."
"How horrible ... and stupid. And you call that humanism?"
"No, not at all. Bruno was the humanist, not his executioners. During the Renaissance, what we call anti-humanism flourished as well. By this I mean the authoritarian power of State and Church. During the Renaissance there was a tremendous thirst for trying witches, burning heretics, magic and superstition, bloody religious wars--and not least, the brutal conquest of America. But humanism has always had a shadow side. No epoch is either purely good or purely evil. Good and evil are twin threads that run through the history of mankind. And often they intertwine. This is not least true of our next key phrase, a new scientific method, another Renaissance innovation which I will tell you about."
"Was that when they built the first factories?"
"No, not yet. But a precondition for all the technical development that took place after the Renaissance was the new scientific method. By that I mean the completely new approach to what science was. The technical fruits of this method only became apparent later on."
"What was this new method?"
"Mainly it was a process of investigating nature with our own senses. Since the fourteenth century there had been an increasing number of thinkers who warned against blind faith in old authority, be it religious doctrine or the natural philosophy of Aristotle. There were also warnings against the belief that problems can be solved purely by thinking. An exaggerated belief in the importance of reason had been valid all through the Middle Ages. Now it was said that every investigation of natural phenomena must be based on observation, experience, and experiment. We call this the empirical method."
"Which means?"
"It only means that one bases one's knowledge of things on one's own experience--and not on dusty parchments or figments of the imagination. Empirical science was known in antiquity, but systematic experiments were something quite new."
"I guess they didn't have any of the technical apparatus we have today."
"Of course they had neither calculators nor electronic scales. But they had mathematics and they had scales. And it was now above all imperative to express scientific observations in precise mathematical terms. 'Measure what can be measured, and make measurable what can-not be measured,' said the Italian Galileo Galilei, who was one of the most important scientists of the seventeenth century. He also said that the book of nature is written in the language of mathematics."
"And all these experiments and measurements made new inventions possible."
"The first phase was a new scientific method. This made the technical revolution itself possible, and the technical breakthrough opened the way for every invention since. You could say that man had begun to break away from his natural condition. Nature was no longer something man was simply a part of. 'Knowledge is power,' said the English philosopher Francis Bacon, thereby underlining the practical value of knowledge-- and this was indeed new. Man was seriously starting to intervene in nature and beginning to control it."
"But not only in a good way?"
"No, this is what I was referring to before when I spoke of the good and the evil threads that are constantly intertwined in everything we do. The technical revolution that began in the Renaissance led to the spinning jenny and to unemployment, to medicines and new diseases, to the improved efficiency of agriculture and the impoverishment of the environment, to practical appliances such as the washing machine and the refrigerator and pollution and industrial waste. The serious threat to the environment we are facing today has made many people see the technical revolution itself as a perilous maladjustment to natural conditions. It has been pointed out that we have started something we can no longer control. More optimistic spirits think we are still living in the cradle of technology, and that although the scientific age has certainly had its teething troubles, we will gradually learn to control nature without at the same time threatening its very existence and thus our own."
"Which do you think?"