- Alexei Anatolyevich Navalny (Russian: Алексей Анатольевич Навальный, IPA: [ɐlʲɪkˈsʲej ɐnɐˈtolʲjɪvʲɪtɕ nɐˈvalʲnɨj]; 4 June 1976 – 16 February 2024) was a Russian opposition leader, lawyer, anti-corruption activist, and political prisoner. He organised anti-government demonstrations and ran for office to advocate reforms against corruption in Russia and against President Vladimir Putin and his government. Navalny was founder of the Anti-Corruption Foundation (FBK). He was recognised by Amnesty International as a prisoner of conscience, and was awarded the Sakharov Prize for his work on human rights.
- Accordingly, seeing that our senses sometimes deceive us, I was willing to suppose that there existed nothing really such as they presented to us; and because some men err in reasoning, and fall into paralogisms, even on the simplest matters of Geometry, I, convinced that I was as open to error as any other, rejected as false all the reasonings I had hitherto taken for demonstrations; and finally, when I considered that the very same thoughts (presentations) which we experience when awake may also be experienced when we are asleep, while there is at that time not one of them true, I supposed that all the objects (presentations) that had ever entered into my mind when awake, had in them no more truth than the illusions of my dreams.