WEBVTT 00:00:21.990 --> 00:00:24.490 A good evening to all. 00:00:25.080 --> 00:00:31.200 The Nobel Prize in Physics 2014 was awarded to three scientists. . 00:00:31.290 --> 00:00:34.000 Three researchers from Japan, 00:00:34.120 --> 00:00:39.560 for their fundamental role in developing new light sources: 00:00:39.680 --> 00:00:44.720 the blue light emitting diodes called LEDs. 00:00:44.720 --> 00:00:50.480 These light sources are effective and environmentally-friendly. 00:00:50.480 --> 00:00:55.120 And then these light sources will be, 00:00:55.120 --> 00:01:00.880 as I put it here, the lights of the 21st century. 00:01:00.880 --> 00:01:04.239 LED lights will be the lighting of the 21st century, 00:01:04.239 --> 00:01:11.080 like Edison's lamp was the lighting of the 20th century. 00:01:11.080 --> 00:01:13.320 This is a technological breakthrough. 00:01:13.320 --> 00:01:18.320 A technological breakthrough that is based on a theory, 00:01:18.320 --> 00:01:19.960 the quantum theory. 00:01:19.960 --> 00:01:25.520 In fact, this quantum theory was born in the early 20th century 00:01:25.520 --> 00:01:31.520 and led to a number of important and fundamental applications: 00:01:31.520 --> 00:01:34.780 the transistor, which is the basis of electronics; 00:01:34.780 --> 00:01:40.640 but also an object that was very mysterious at first: the laser, 00:01:40.640 --> 00:01:47.240 which has become a valuable tool for doctors in surgery 00:01:47.240 --> 00:01:54.040 but that is more commonly found at every cash deck 00:01:54.040 --> 00:01:57.000 for reading bar codes. 00:01:57.040 --> 00:02:04.080 So initially, however, quantum theory was not accepted. 00:02:04.080 --> 00:02:07.520 It was not accepted because it was questioning 00:02:08.720 --> 00:02:11.320 our vision of physics. 00:02:11.320 --> 00:02:13.680 In fact, it was a breakthrough. 00:02:13.680 --> 00:02:17.200 Breaks are rarely accepted easily. 00:02:17.240 --> 00:02:20.520 At the same time, in the early 20th century 00:02:20.520 --> 00:02:23.400 there was a break in art. 00:02:23.400 --> 00:02:25.640 Yes, abstract painting. 00:02:25.640 --> 00:02:30.280 Abstract painting also changed 00:02:30.280 --> 00:02:34.480 the vision we had of the world, of representation. 00:02:34.480 --> 00:02:39.240 So, what did quantum physics actually bring? 00:02:39.240 --> 00:02:41.000 What did it proposed? 00:02:41.000 --> 00:02:43.200 It proposed new objects. 00:02:43.200 --> 00:02:46.920 Neither particle nor wave, 00:02:46.920 --> 00:02:50.280 "totally crazy things", 00:02:50.280 --> 00:02:55.200 to quote the great physicist Richard Feynman. 00:02:55.200 --> 00:03:00.840 It proposed another vision of the microscopic world. 00:03:00.840 --> 00:03:04.520 It proposed to enter a Terra Incognita 00:03:04.520 --> 00:03:06.920 which physicists occupied pretty soon. 00:03:07.880 --> 00:03:14.040 And in fact, this evolution of science was possible only because 00:03:14.040 --> 00:03:17.120 science freed itself from dogma. 00:03:17.120 --> 00:03:20.080 Science has gained its independence. 00:03:20.080 --> 00:03:22.760 This long history of science 00:03:22.760 --> 00:03:27.200 is the history of intelligence against obscurantism, 00:03:27.200 --> 00:03:30.440 of critical minds against dogmatism. 00:03:30.480 --> 00:03:35.000 This is the story of reason and doubt against certainty. 00:03:34.960 --> 00:03:37.920 It's a long and beautiful story. 00:03:37.920 --> 00:03:40.960 We should tell it to our children, 00:03:40.960 --> 00:03:44.200 explain the perseverance of scholars, 00:03:44.200 --> 00:03:48.720 explain that scientists had to fight 00:03:48.720 --> 00:03:52.360 against those who did not accept the ideas they were bringing 00:03:52.360 --> 00:03:57.520 because it was thought these ideas would disturb beliefs. 00:03:57.520 --> 00:04:05.600 And, yes, scientists have had to fight against a concept of knowledge 00:04:05.600 --> 00:04:11.560 locked inside a single idea of what the truth was. 00:04:11.560 --> 00:04:19.279 Whereas, on the contrary it is necessary to promote a knowledge 00:04:19.279 --> 00:04:22.920 open to the world, to civilizations. 00:04:22.960 --> 00:04:25.920 This is what Kheireddine, whom you see here, 00:04:25.880 --> 00:04:30.120 who was Prime Minister of Tunisia in the second half of the 19th century, 00:04:30.120 --> 00:04:34.800 wanted to introduce in a new education system 00:04:34.800 --> 00:04:37.640 which was fundamental for the evolution of Tunisia, 00:04:37.640 --> 00:04:40.720 this teaching called the Sadikian education. 00:04:40.720 --> 00:04:43.560 What did Kheireddine want to do? 00:04:43.560 --> 00:04:47.160 Kheireddine wanted Tunisia to catch up in science 00:04:47.160 --> 00:04:52.240 because for centuries, Tunisia had forgotten science, 00:04:52.280 --> 00:04:54.640 like other Arab-Muslim countries. 00:04:54.640 --> 00:05:01.160 Yes, the Arab-Muslim world forgot the science of its ancestors. 00:05:01.160 --> 00:05:05.960 Let me tell you the last episode of Arabic astronomy. 00:05:05.960 --> 00:05:13.080 In Istanbul, in 1577, an observatory was built. 00:05:13.080 --> 00:05:17.280 Beautiful... with the most efficient instruments of the time, 00:05:17.280 --> 00:05:23.920 like this other observatory that was designed in... "the North" 00:05:23.920 --> 00:05:26.560 by the great Danish physicist Tycho Brahe, 00:05:26.560 --> 00:05:30.480 (at the time, the term would have been astronomer, not physicist). 00:05:30.520 --> 00:05:38.160 And this observatory was installed in the Palace of Uraniborg. 00:05:38.160 --> 00:05:46.120 The two observatories, in Istanbul and in this northern country, 00:05:46.120 --> 00:05:49.320 had completely opposite fates 00:05:49.320 --> 00:05:53.080 after the appearance of a comet in the northern sky. 00:05:53.080 --> 00:06:00.680 For Brahe, it was fundamental observations 00:06:00.680 --> 00:06:06.600 which subsequently led to the extraordinary development 00:06:06.640 --> 00:06:09.520 of astronomy in the European world. 00:06:09.480 --> 00:06:13.200 I think everyone knows about it. 00:06:13.200 --> 00:06:18.040 But in Istanbul, unfortunately, 00:06:18.040 --> 00:06:22.040 that was the end of a beautiful scientific adventure. 00:06:22.040 --> 00:06:27.960 Why? Because in fact, this comet had been interpreted differently. 00:06:27.960 --> 00:06:34.680 In Istanbul, on the orders of the Sultan, the observatory was destroyed in 1580 00:06:34.680 --> 00:06:40.760 because the Sultan had not accepted the astronomer's omen. 00:06:40.760 --> 00:06:44.720 So today, we know more about comets, 00:06:44.720 --> 00:06:46.400 you know more now... 00:06:46.400 --> 00:06:49.640 we even make appointments from Earth! 00:06:49.640 --> 00:06:53.760 Science is also at the heart of economic development. 00:06:53.760 --> 00:06:58.040 Europe was built, was economically developed 00:06:58.040 --> 00:07:00.480 thanks to scientific development. 00:07:00.480 --> 00:07:03.720 And Kheireddine, whom I mentioned earlier, understood this. 00:07:03.720 --> 00:07:08.760 Kheireddine who said we had to take science wherever it comes from. 00:07:08.760 --> 00:07:12.200 Yes, we had to take science wherever it comes from 00:07:12.200 --> 00:07:15.840 and our children had to discover it early. 00:07:15.840 --> 00:07:19.360 We had to educate our children in this double culture. 00:07:19.320 --> 00:07:22.920 Give them a traditional instruction, of course, 00:07:22.920 --> 00:07:26.200 - at the time, in the 19th century, it was hard to say otherwise - 00:07:26.200 --> 00:07:31.440 but also give them the teaching of modern science, 00:07:31.440 --> 00:07:33.200 of foreign languages. 00:07:33.480 --> 00:07:40.520 Yes, it is thanks to this double culture that modernity came into Tunisia. 00:07:40.680 --> 00:07:46.920 Yes, this modernity that is in me, that I carry with me, that I am proud of. 00:07:46.920 --> 00:07:52.680 My parents taught me this modernity, they instilled it in me. 00:07:52.680 --> 00:07:55.680 My grandfather, a French and Arabic teacher. 00:07:55.680 --> 00:08:00.400 My father, a pharmacist-biologist. Look at this picture. 00:08:00.400 --> 00:08:04.080 This photo - my father is one of those pupils. 00:08:04.080 --> 00:08:06.920 These pupils of the French-Arab school of Sfax. 00:08:07.480 --> 00:08:11.320 It was the school year 1921-1922. 00:08:11.320 --> 00:08:15.080 All dressed in jebba, except the teacher, 00:08:15.080 --> 00:08:22.000 and all loving the values of equality and freedom: 00:08:21.960 --> 00:08:24.440 the values of the French Revolution. 00:08:24.440 --> 00:08:28.840 All for opening up to other cultures. 00:08:28.840 --> 00:08:31.560 Yes, openness to other cultures... 00:08:31.560 --> 00:08:35.039 This is what allows to know the other, 00:08:35.080 --> 00:08:37.799 what allows to respect the other, 00:08:37.799 --> 00:08:42.200 what allows sharing. 00:08:42.200 --> 00:08:46.560 This must be at the heart of the education system. 00:08:46.560 --> 00:08:50.840 Yes, a teacher's mission is a rich one. 00:08:50.880 --> 00:08:55.560 They are passers of knowledge. They are passers of cultures. 00:08:55.560 --> 00:08:57.680 They are also passers of values. 00:08:57.680 --> 00:09:01.480 Values to share everywhere on the planet, 00:09:01.480 --> 00:09:06.040 I mentionned equality: equality for all. 00:09:06.040 --> 00:09:08.280 Equality for women and men. 00:09:08.280 --> 00:09:11.800 Yes, equality for women and men. 00:09:11.800 --> 00:09:16.440 So as a Tunisian woman, I want to say 00:09:16.440 --> 00:09:21.000 that being from a country of Muslim culture, 00:09:21.000 --> 00:09:25.000 I believe that women in Islamic countries 00:09:25.040 --> 00:09:32.000 do not have to undergo an inferior status. I do. 00:09:31.960 --> 00:09:36.520 Already, this principle of equality between men and women, 00:09:36.520 --> 00:09:42.000 was stated by Tahar Haddad, a Tunisian theologian, in 1930 00:09:41.960 --> 00:09:49.360 and his famous work "Our woman, Islamic law and society " 00:09:49.360 --> 00:09:53.200 was translated into French - you see here the book cover. 00:09:53.200 --> 00:10:00.200 And at the end of the book, a figure which may surprise you. 00:10:00.200 --> 00:10:06.800 We don't have time to comment on that but I'm going to read the small caption: 00:10:06.800 --> 00:10:11.480 "Our woman, between a faded past and a promising present." 00:10:11.480 --> 00:10:16.760 Let's talk about the present. 00:10:16.760 --> 00:10:19.240 We are worried. We are. 00:10:19.240 --> 00:10:25.760 We are concerned by the violence, by the acts of barbarism in the region. 00:10:25.760 --> 00:10:32.880 Yes, we are worried. March 18, Tunisia, my country, 00:10:32.920 --> 00:10:38.140 the Bardo Museum was attacked, there were victims. 00:10:38.140 --> 00:10:43.920 I pay tribute to them, but the Bardo Museum 00:10:43.920 --> 00:10:47.080 is the museum of the Mediterranean. 00:10:47.080 --> 00:10:51.160 This is the museum where all the Tunisian history is present. 00:10:51.160 --> 00:10:58.600 Tunisia was Berber, Punic, Roman, Byzantine, Vandal 00:10:58.600 --> 00:11:01.240 then Muslim and Arab. 00:11:01.240 --> 00:11:09.200 So what can we do? How to deal with this violence? 00:11:09.200 --> 00:11:13.040 Yes, we must protect our children. 00:11:13.040 --> 00:11:15.000 We must protect our children from those who invite 00:11:16.800 --> 00:11:19.960 to camp in "the field of the curse 00:11:19.960 --> 00:11:26.160 to maintain the henchmen of the Demon and the sequence of destructive hatred". 00:11:26.160 --> 00:11:32.280 This is a quote from a great Tunisian thinker 00:11:32.280 --> 00:11:39.560 Abdelwahab Meddeb, who died recently. I pay tribute to him 00:11:39.560 --> 00:11:45.920 Yes, this violence... how to react to this violence? 00:11:45.920 --> 00:11:54.280 Well all together, each of us in our own way. Each of us where we are. 00:11:54.280 --> 00:11:56.920 So as a teacher and a scientist, 00:11:57.000 --> 00:12:02.000 I would like to mention very quickly two examples. 00:12:02.040 --> 00:12:10.720 One is the story of my colleague, Aroua Saida, a biologist and didactician, 00:12:10.720 --> 00:12:14.640 who understood that, in fact, students, 00:12:14.640 --> 00:12:19.600 our students in their final year, studying the theory of evolution 00:12:18.560 --> 00:12:26.280 had a... shall we say composite understanding 00:12:26.280 --> 00:12:29.320 of the diversity of life. 00:12:29.320 --> 00:12:34.440 They muddled up the scientific and theological references. 00:12:34.440 --> 00:12:38.080 And she worked with them. And the students understood. 00:12:38.080 --> 00:12:42.600 They understood you had to step into the researcher's shoes 00:12:42.600 --> 00:12:49.480 That you had to accept the keys to science, to knowledge, 00:12:50.280 --> 00:12:52.640 to accept questioning and critical thinking. 00:12:52.640 --> 00:12:58.480 The second example concerns the scientific community. 00:12:58.480 --> 00:13:05.040 The scientific community must fight against obscurantists, 00:13:05.040 --> 00:13:08.600 who unfortunately, are currently investing the Web. 00:13:08.600 --> 00:13:11.000 Yes, the scientific community 00:13:12.640 --> 00:13:14.800 that of Academies of Sciences 00:13:14.800 --> 00:13:16.520 made a declaration. 00:13:16.520 --> 00:13:21.880 It gathered the Academies of Sciences of 68 countries 00:13:21.880 --> 00:13:27.800 Europe, Latin America, USA, Africa, Asia, 00:13:27.800 --> 00:13:31.520 and among these countries Arab Muslim countries: 00:13:31.560 --> 00:13:35.200 The Islamic Republic of Iran, the Kingdom of Morocco 00:13:35.240 --> 00:13:38.080 Turkey, Palestine... 00:13:38.040 --> 00:13:43.480 perhaps I forgot some of them but anyway... 00:13:43.480 --> 00:13:46.560 What did this declatation say? 00:13:46.560 --> 00:13:52.680 It shows that it is important to teach the theory of evolution 00:13:52.680 --> 00:13:56.480 that is so attacked on social networks, on the Internet 00:13:56.480 --> 00:14:00.160 and that teaching this theory 00:14:00.160 --> 00:14:06.560 which is actually accepted by the scientific community, 00:14:06.560 --> 00:14:12.320 will bring students important knowledge 00:14:12.320 --> 00:14:17.240 since the theory of evolution is one of the great advances of knowledge. 00:14:17.240 --> 00:14:25.360 And this declaration called teachers, policy makers, 00:14:25.360 --> 00:14:29.720 parents to educate their children so they can understand science. 00:14:29.720 --> 00:14:32.760 But it also reminds of something interesting: 00:14:32.760 --> 00:14:35.480 that number of questions 00:14:35.480 --> 00:14:37.680 cannot be explained by science. 00:14:37.680 --> 00:14:40.960 Then we should take other approaches: 00:14:40.960 --> 00:14:46.360 philosophical, social, cultural, religious. 00:14:46.360 --> 00:14:49.640 These approaches have different fields of action. 00:14:49.640 --> 00:14:57.880 They have different fields of action and owe each other mutual respect. 00:14:57.920 --> 00:15:03.280 So this declaration is a wonderful call. 00:15:03.280 --> 00:15:07.080 A wonderful call from a scientific community, 00:15:07.080 --> 00:15:10.440 of different culture, diverse culture. 00:15:10.440 --> 00:15:14.720 But a call for young people to understand what science is. 00:15:14.720 --> 00:15:18.560 For young people to understand that science is universal. 00:15:18.560 --> 00:15:23.560 And I would add, because that is what is implied in that declaration, 00:15:23.560 --> 00:15:26.880 human rights too, are universal. 00:15:26.880 --> 00:15:31.760 And it is this universality I'm fighting for. 00:15:31.800 --> 00:15:33.240 Thank you. 00:15:33.280 --> 00:15:38.680 (Applause)