Colophon
A free encyclopedia of philosophy that doubles as a course. Every concept has an entry you can look up and a lesson you can work through, arranged into a curriculum you can finish. No advertising, no account.
Reference works are comprehensive but unordered; courses are ordered but narrow; interactive maps are striking but read-only. Noesis is all three at once — the same entry serves as an article, as a lesson at a fixed point in a curriculum, and as a question that checks you understood. The map on the front page is a table of contents rather than a picture of one: every node opens a real lesson.
Powered by AI, developed by Omar Obeidat. Entries haven't been individually fact-checked, so treat Noesis as a starting point — follow the reference on each page back to the original before citing anything.
Quoted passages are public domain. Every translation used pre-dates 1929 and every translator died over seventy years ago, so the excerpts are free of copyright in both the US and life-plus-70 countries; Rousseau is quoted in his original French. Beauvoir's The Second Sex and Rawls's A Theory of Justice are still in copyright, so no text from either is reproduced — those pages carry commentary only.
Original content is licensed CC BY 4.0: copy, adapt and redistribute it, including commercially, as long as you give credit. Fraunces and Inter are used under the SIL Open Font License.
No cookies, no analytics, no accounts. Your progress and quiz scores live in your own browser and never leave your device — so they won't follow you to another computer, and clearing your browser data erases them. Typefaces load from Google Fonts.
Spotted an error, a broken link, or something that reads wrong? The more specific the better — the page, the claim, and what it should say.