General Philosophy Text Repositories

• Internet Encyclopedia of Philosophy (IEP)
  https://iep.utm.edu
  Scholarly articles, bibliographies, and primary texts across the history of philosophy.
   

• MIT Classics Archive
  https://classics.mit.edu
  A large, reliable collection of classical philosophical texts in English translation.
   

• Perseus Digital Library (Tufts University)
  https://www.perseus.tufts.edu
  Greek and Latin texts with translations, commentaries, and lexical tools.
   

• Christian Classics Ethereal Library (CCEL)
  https://www.ccel.org
  Early Christian and medieval theological and philosophical texts.
   

 
Texts by Philosopher
Anselm

• Proslogion and other works (CCEL)
  https://www.ccel.org/a/anselm
   

 
Thomas Aquinas

• Summa Theologiae (New Advent)
  https://www.newadvent.org/summa/
   

• Summa Contra Gentiles (University of Notre Dame – Maritain Center)
  https://maritain.nd.edu/jmc/etext/scg.htm
   

 
Aristotle

• Complete Works (English) – MIT Classics
  https://classics.mit.edu/Aristotle/
   

• Greek and English texts – Perseus Project
  https://www.perseus.tufts.edu/hopper/searchresults?q=Aristotle
   

 
Augustine

• Complete works (Latin & English)
  https://www.augustinus.it
   

 
Francis Bacon

• Essays and major works – MIT Classics
  https://classics.mit.edu/Bacon/
   

 
George Berkeley

• Principles of Human Knowledge & Dialogues – MIT Classics
  https://classics.mit.edu/Berkeley/
   

 
René Descartes

• Discourse on Method & Meditations – MIT Classics
  https://classics.mit.edu/Descartes/
   

 
Epictetus

• Discourses and Enchiridion – MIT Classics
  https://classics.mit.edu/Epictetus/
   

 
Epicurus

• Letters and fragments – MIT Classics
  https://classics.mit.edu/Epicurus/
   

 
G. W. F. Hegel

• German texts – Projekt Gutenberg (DE)
  https://www.projekt-gutenberg.org/autoren/namen/hegel.html
   

 
Thomas Hobbes

• Leviathan – MIT Classics
  https://classics.mit.edu/Hobbes/leviathan.html
   

 
David Hume

• Enquiry and Treatise – MIT Classics
  https://classics.mit.edu/Hume/
   

 
Immanuel Kant

• Major works (English) – MIT Classics
  https://classics.mit.edu/Kant/
   

• German originals – Projekt Gutenberg
  https://www.projekt-gutenberg.org/autoren/namen/kant.html
   

 
Plato

• Complete Dialogues (English) – MIT Classics
  https://classics.mit.edu/Plato/
   

• Greek texts – Perseus Project
  https://www.perseus.tufts.edu/hopper/searchresults?q=Plato
   

 
Plotinus

• Enneads (English) – MIT Classics
  https://classics.mit.edu/Plotinus/
   

 
Spinoza

• Ethics and other works – MIT Classics
  https://classics.mit.edu/Spinoza/
   

 
Language & Research Tools

• Latin texts and tools – Perseus Digital Library
  https://www.perseus.tufts.edu
   

• German philosophical texts – Projekt Gutenberg
  https://www.projekt-gutenberg.org
   

• Multilingual classical resources – Internet Archive
  https://archive.org