- George Boole
- Ida Cassa Heffron
- William Whewell
- Alexandr Batěk
- Arthur James Balfour
- Heinrich Lhotzky
- Charles R. Morrison
- Augustus De Morgan
- Wilhelm Jerusalem
- Charles S. Peirce
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The Essentials of Logic, Being Ten Lectures on Judgment and Inference
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A Treatise of Human Nature Being an Attempt to Introduce the Experimental Method Into Moral Subjects; and Dialogues Concerning Natural Religion
David HumeRead For Free - Victor Alvin Ketcham
- Nathan Christ Schaeffer
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Meditations on the Essence of Christianity, and on the Religious Questions of the Day.
François GuizotRead For Free - Voltaire
- R. Austin Freeman
- Arthur Morrison
- marquis de Pierre Simon Laplace


























