“In religion and politics, people's beliefs and convictions are in almost every case gotten at second-hand, and without examination, from authorities who have not themselves examined the questions at issue, but have taken them at second-hand from other non-examiners, whose opinions about them were not worth a brass farthing.”

9:40–10:10
Exuberant Skepticism (2012)

Source: 1970s-1980s, The Limits Of Organization (1974), Chapter 4, Authority And Responsibility, p. 65

Letter to Marin Mersenne (1637) as quoted by D. E. Smith & M. L. Latham Tr. The Geometry of René Descartes (1925)

Source: Every Fifteen Minutes

Pg. 304.
Against Method (1975)
Context: Is it not a fact that a learned physician is better equipped to diagnose and to cure an illness than a layman or the medicine-man of a primitive society? Is it not a fact that epidemics and dangerous individual diseases have disappeared only with the beginning of modern medicine? Must we not admit that technology has made tremendous advances since the rise of modern science? And are not the moon-shots a most and undeniable proof of its excellence? These are some of the questions which are thrown at the impudent wretch who dares to criticize the special positions of the sciences. The questions reach their polemical aim only if one assumes that the results of science which no one will deny have arisen without any help from non-scientific elements, and that they cannot be improved by an admixture of such elements either. "Unscientific" procedures such as the herbal lore of witches and cunning men, the astronomy of mystics, the treatment of the ill in primitive societies are totally without merit. Science alone gives us a useful astronomy, an effective medicine, a trustworthy technology. One must also assume that science owes its success to the correct method and not merely to a lucky accident. It was not a fortunate cosmological guess that led to progress, but the correct and cosmologically neutral handling of data. These are the assumptions we must make to give the questions the polemical force they are supposed to have. Not a single one of them stands up to closer examination.

Vol. I, The Way of Illumination Section I - The Way of Illumination, Part III : The Sufi http://wahiduddin.net/mv2/I/I_I_3.htm
The Spiritual Message of Hazrat Inayat Khan
Context: What is the Sufi's belief regarding the coming of a World Teacher, or, as some speak if it, the "Second Coming of Christ?" The Sufi is free from beliefs and disbeliefs, and yet gives every liberty to people to have their own opinion. There is no doubt that if an individual or a multitude believe that a teacher or a reformer will come, he will surely come to them. Similarly, in the case of those who do not believe that any teacher or reformer will come, to them he will not come. To those who expect the Teacher to be a man, a man will bring the message; to those who expect the Teacher to be a woman, a woman must deliver it. To those who call on God, God comes. To those who knock at the door of Satan, Satan answers. There is an answer to every call. To a Sufi the Teacher is never absent, whether he comes in one form or in a thousand forms he is always one to him, and the same One he recognizes to be in all, and all Teachers he sees in his one Teacher alone. For a Sufi, the self within, the self without, the kingdom of the earth, the kingdom of heaven, the whole being is his teacher, and his every moment is engaged in acquiring knowledge. For some, the Teacher has already come and gone, for others the Teacher may still come, but for a Sufi the Teacher has always been and will remain with him forever.

Letter 2
Letters on Logic: Especially Democratic-Proletarian Logic (1906)