Richard Principal Leitch

Newcastle Richard Principal Leitch

Mont Orgueil Castle, Gorey, Jersey, 1876 Richard Principal Leitch

St. Stephen's Gate, Jerusalem, c. 1860 Richard Principal Leitch

The Hit Frederic Leighton

Portrait of Catherine Lethieullier Isaack Luttichuys

Portrait of Frederic Leighton Frederic Leighton

Confucius Teaching Anonymous Anonymous

Hughes Felicite Robert de Lamennais, French philosophical and political writer Lecomte

Christian Wolff (1679-1754). German philosopher Anonymous

Twixt Hope and Fear, c.1895 Frederic Leighton

A Greek astronomer studying the stars Johannes Kip

The Training of a Volunteer: Theoretical Principles Anonymous

Portrait of Benjamin Waterhouse (1754-1846) Richard Reeve

Title page of Principia philosophiae by Rene Descartes, 1644 Dutch School

Lieutenant General Sir Ronald Forbes Adam Bt, 1940 circa Reginald-Grenville Eves

Portrait of J.A.C. Rovers, professor in the Faculty of Philosophy and Letters at the University of Utrecht Anonymous

Immanuel Kant Anonymous

Immaculate Conception Placido Costanzi

American Lithograph "Principles of the Prohibition Party" Anonymous

Victor Cousin, French philosopher Maurin

Illustration from the Treatise on Truth & Falsehood About the Philosopher's Stone Anonymous

Gilbert Ryle Rex Whistler

Letter by Frederick the Great, King of Prussia, to Count Francesco Algarotti Frederick George Netherclift

Portrait of William Derham (1657-1735) unknown

Plans for the Red House Philip Webb

Thunderbolt or lightning, 1508. Anonymous

Sir Peter Lely Charles Beale

Portrait of Theodore Haak (1605-1690) unknown

Poster Depicting Republican Party Principles Anonymous

Priest examines the authenticity of the iron found from the spear of Longinus Jan Luyken

Marble Bust of Nicolo Machiavelli Anonymous

Allegory of the Immaculate Conception Anonymous

Immaculate Conception, 1670-1672 Juan de Valdes Leal

Portrait of Isaac Newton (1642-1727) Charles Jervas

The Immaculate Conception 1607-13 El Greco

The Virgin of the Immaculate Conception, c.1660 Bartolome Esteban (& studio) Murillo