Everything worth doing is exhausting. (John Polanyi)
| Pieter de Hooch, The Courtyard of a House in Delft 1658, Oil on canvas, 73 x 60 cm National Gallery, London |
| Pieter de Hooch, The Courtyard of a House in Delft 1658, Oil on canvas, 73 x 60 cm National Gallery, London |
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| Rooster by Kelly Mann 2011 Coggeshall Farm Museum |
| Pelagio Palagi Newton's Discovery of the Refraction of Light 1827 Oil on canvas, 167 x 216 cm Galleria d'Arte Moderna, Brescia |
| Johannes Vermeer The Astronomer c. 1668 Oil on canvas, 50 x 45 cm Musée du Louvre, Paris |
| Johannes Vermeer The Geographer c. 1668 Oil on canvas, 53 x 46,6 cm Städelsches Kunstinstitut, Frankfurt |
| Joseph Wright A Philosopher Lecturing with a Mechanical Planetary 1766 Oil on canvas, 147,3 x 203,2 cm Derby Museum and Art Gallery, Derby |
| Giuseppe Angeli Lesson in Astronomy 1757-59 Oil on canvas, 100 x 45 cm The Hermitage, St. Petersburg |
| Willem van der Vliet Philosopher and Pupils 1626 Oil on panel, 85 x 113 cm National Trust for Scotland, Brodie Castle |
| Jean-Baptiste Camille Corot - The Reader Wreathed with Flowers (Virgil's Muse) 1845 Oil on canvas, 47 x 34 cm Musée du Louvre, Paris |
| The Great Fire of London, with Ludgate and Old St. Paul's, oil on canvas, ca. 1670, by an unknown artist. |
| Painting circa 1670 London Fire |
| Giuseppe Maria Crespi Bookshelves c. 1725 Oil on canvas Civico Museo Bibliografico Musicale, Bologna |