Ludwig Josef Johann Wittgenstein was an Austrian philosopher who worked primarily in logic, the philosophy of mathematics, the philosophy of mind, and the philosophy of language.
Wittgenstein in 1929
Karl Wittgenstein was one of the richest men in Europe.
Palais Wittgenstein, the family home, around 1910
Ludwig, c. 1890s
The Philosophy of mind is a branch of philosophy that deals with the nature of the mind and its relation to the body and the external world.
Portrait of René Descartes by Frans Hals (1648)
John Searle—one of the most influential philosophers of mind, proponent of biological naturalism (Berkeley 2002)
Since the 1980s, sophisticated neuroimaging procedures, such as fMRI (above), have furnished increasing knowledge about the workings of the human brain, shedding light on ancient philosophical problems.