A philosopher by lamplight 

"A Philosopher by Lamplight" is a painting by Joseph Wright of Derby, an English artist known for his dramatic use of light and shadow. The painting depicts a philosopher seated in a cave, illuminated by a single lamp. Two figures stand in the shadows behind him, observing the philosopher’s contemplation. The scene evokes a sense of mystery and intrigue, a characteristic feature of Wright’s work, often associated with the Enlightenment and the rise of scientific inquiry. The painting's use of chiaroscuro, a technique of contrasting light and dark, adds to its dramatic effect, highlighting the philosopher's concentration.