George Berkeley
- Online texts including the Dialogues between Hylas and Philonous and the Treatise Concerning the Principles of Human Knowledge.
- http://www.class.uidaho.edu/mickelsen/berkeley.htm

A Treatise Concerning the Principles of Human Knowledge
- In plain text, or as a zip file. From Project Gutenberg.
- http://www.gutenberg.org/etext/4723

Three Dialogues Between Hylas and Philonous, in Opposition to Sceptics and Atheists
- In plain text, or as a zip file. From Project Gutenberg.
- http://www.gutenberg.org/etext/4724

The Querist
- In plain text or as a zip file. At Project Gutenberg.
- http://www.gutenberg.org/etext/4543

An Essay Towards a New Theory of Vision
- In plain text, or as a zip file. At Project Gutenberg.
- http://www.gutenberg.org/etext/4722

The Analyst: A Discourse Addressed to an Infidel Mathematician
- An essay by Berkeley considering whether mathematical truths have any more certainty than religious ones. Full text in HTML.
- http://www.maths.tcd.ie/pub/HistMath/People/Berkeley/Analyst/Analyst.html