Philosophy Books

The Mathematicall Praeface to Elements of Geometrie of Euclid of Megara

John Dee

The Mathematicall Praeface to Elements of Geometrie of Euclid of Megara is an early work on geometry written by John Dee, an Anglo-Welsh mathematician, astronomer, astrologer and occult philosoph..

The Improvement of Human Reason

Ibn Tufail

The Improvement of Human Reason Exhibited in the Life of Hai Ebn Yokdhan is an Islamic philosophical work written by  Abu Bakr Muhammad Ibn Tufail al-Qasi.Author's Preface:When Mr. Pococke first ..

The Principles of Philosophy

René Descartes

Principles of Philosophy is a book by René Descartes. In essence it is a synthesis of the Discourse on Method and Meditations on First Philosophy It was written in Latin, published in 1644 and dedicat..

Thoughts I Met on the Highway

Ralph Waldo Trine

Thoughts I Met on the Highway is a philosophical work by Ralph Waldo Trine, an American philosopher, author, and teacher. He wrote many books on the New Thought movement...

On the Popular Judgment

Immanuel Kant

German philosopher Immanuel Kant's philosophical work On the Popular Judgment is a tripartite essay – published variously as “On the Popular Judgment” (J. Richardson trans.), “On the Old Saw..

De Lof der Zotheid

Desiderius Erasmus

De Lof der Zotheid is a Dutch essay translated into English as The Praise of Folly written by Dutch philosopher and Christian humanist Desiderius Erasmus Roterodamus...

The Approach to Philosophy

Ralph Barton Perry

In an essay on "The Problem of Philosophy at the Present Time," Professor Edward Caird says that "philosophy is not a first venture into a new field of thought, but the rethinking of a secular and rel..

Philosophical Letters of Friedrich Schiller

Friedrich Schiller

The reason passes, like the heart, through certain epochs and transitions, but its development is not so often portrayed. Men seem to have been satisfied with unfolding the passions in their extremes,..