The Value of Philosophy
Plato – Apology, Trans. by Benjamin Jowett
http://classics.mit.edu/Plato/apology.html
Bertrand Russell – from Problems of Philosophy (ch. 15)
https://en.wikisource.org/wiki/The_Problems_of_Philosophy/Chapter_15
Epistemology
Rene Descartes – from Meditations on First Philosophy (Book I, II), Trans. by John Veitch
https://en.wikisource.org/wiki/Meditations_on_First_Philosophy/Meditation_I
https://en.wikisource.org/wiki/Meditations_on_First_Philosophy/Meditation_II
John Locke – from An Essay Concerning Human Understanding (Book I, Ch. 1, Book II, Ch. I)
http://www.gutenberg.org/files/10615/10615-h/10615-h.htm
George Berkeley – from Three Dialogues between Hylas and Philonis (First, Second Dialogues)
https://en.wikisource.org/wiki/Three_Dialogues_Between_Hylas_and_Philonous
David Hume – from An Enquiry Concerning Human Understanding (Sect. IV, Part I,II)
https://en.wikisource.org/wiki/An_Enquiry_Concerning_Human_Understanding
Immanuel Kant – from The Critique of Pure Reason (Introduction Part I-VII), Trans. John Meiklejohn
https://en.wikisource.org/wiki/Critique_of_Pure_Reason_(Meiklejohn)/Introduction
William James – from Pragmatism (Lecture II)
Metaphysics
Plato – from Republic Book VII, Trans. Benjamin Jowett
https://en.wikisource.org/wiki/The_Republic/Book_VII
Plato – from Parmenides, Trans. Benjamin Jowett
https://en.wikisource.org/wiki/Parmenides
Aristotle – from Categories (Ch. 4, 5), Trans. Octavius Freire Owen
https://en.wikisource.org/wiki/Categories_(Owen)
Aristotle – from On Interpretation, (Ch. 1-9), Trans Octavius Freire Owen
https://en.wikisource.org/wiki/On_Interpretation
Gottfried Wilhelm Liebniz – from Discourse on Metaphysics (VIII-XIII)
https://ebooks.adelaide.edu.au/l/leibniz/gottfried/discourse-on-metaphysics/#section8
David Hume – from An Enquiry into Human Understanding (Sect IV, Part 1-3)
https://en.wikisource.org/wiki/An_Enquiry_Concerning_Human_Understanding
Bertrand Russell – from Human Knowledge: Its Scope and Limits
https://www.scribd.com/document/260648952/Russell-The-Argument-from-Analogy-for-Other-Minds-1948-pdf
Philosophy of Religion
Anselm – from Prosologion (Ch. 2-5)
https://en.wikisource.org/wiki/Proslogium_and_Monologium/Proslogium/Chapter2
Thomas Aquinas – from Summa Theologiae
https://en.wikisource.org/wiki/Summa_Theologiae/First_Part/Question_2
Blaise Pascal – from Pensées (Sect. 3)
https://en.wikisource.org/wiki/Blaise_Pascal/Thoughts/Section_3
Hume, David – from Miracles (Sect X. Part I, II)
https://en.wikisource.org/wiki/An_Enquiry_Concerning_Human_Understanding
Søren Kierkegaard – from Encounter with Faith
https://en.wikisource.org/wiki/Selections_from_the_writings_of_Kierkegaard/Fear_and_Trembling
William James – from The Will to Believe and Other Essays in Popular Philosophy
William Paley – The Watch and the Watchmaker from Natural Theology
https://quod.lib.umich.edu/g/genpub/PaleyNatur/1:2?rgn=div1;view=fulltext
Ethics and Morality
Plato – from Republic (Book II), Trans. Benjamin Jowett
https://en.wikisource.org/wiki/The_Republic/Book_II
Aristotle – from Nicomachean Ethics (Book One), Trans. D.P. Chase
https://en.wikisource.org/wiki/Nicomachean_Ethics_(Chase)/Book_One
David Hume – from An Enquiry Concerning the Principles of Morals (Sect. 1)
Immanuel Kant – from Groundwork of the Metaphysics of Morals (Second Section), Trans. Thomas Kingsmill Abbott
Jeremy Bentham – from The Principles of Morals and Legislation (Ch. I, IV)
https://en.wikisource.org/wiki/An_Introduction_to_the_Principles_of_Morals_and_Legislation
John Stuart Mill – from Utilitarianism (Ch. 1, 2)
https://en.wikisource.org/wiki/Utilitarianism
Socio-Political Philosophy
Thomas Hobbes – from Leviathan (Ch. XIII, XIV, XV)
https://en.wikisource.org/wiki/Leviathan/The_First_Part
John Locke – from The Second Treatise of Government (Book II, Ch. V.)
https://en.wikisource.org/wiki/Two_Treatises_of_Government/Book_II#Chap._V._Of_Property.
Jean-Jacques Rousseau – from Discourse on the Origin and Basis of Inequality Among Men (Part 2)
https://en.wikisource.org/wiki/Discourse_on_the_Origin_of_Inequality_Among_Men/Part_II
Mary Wollstonecraft – from A Vindication of the Rights of Woman: with Strictures on Political and Moral Subjects (Ch. 2)
https://en.wikisource.org/wiki/A_Vindication_of_the_Rights_of_Woman/Chapter_II
Karl Marx – from The Communist Manifesto
https://en.wikisource.org/wiki/Manifesto_of_the_Communist_Party
Bertrand Russell – from Anti-Suffragist Anxieties
https://users.drew.edu/~jlenz/br-anti-suffragists.html
John Stuart Mill – from The Subjection of Women (Ch. 1)
https://en.wikisource.org/wiki/The_Subjection_of_Women/Chapter_1
Art and Aesthetics
Plato – Republic (Book X), Trans. Benjamin Jowett
https://en.wikisource.org/wiki/The_Republic/Book_X
Aristotle – Poetics (Part VI), Trans. S.H. Butcher
https://en.wikisource.org/wiki/The_Poetics_translated_by_S._H._Butcher
David Hume – from Of the Standard of Taste, in Four Dissertations
https://en.wikisource.org/wiki/Of_the_Standard_of_Taste
Immanuel Kant – from The Critique of Aesthetical Judgement (Book 1, Sect. 1 – 5)
http://oll.libertyfund.org/titles/kant-the-critique-of-judgement
Edmund Burke – from A Philosophical Enquiry into the Origin of Our Ideas of the Sublime and Beautiful (Part 1, VII, Part II, 1-XXII)
https://ebooks.adelaide.edu.au/b/burke/edmund/sublime/complete.html