7. Ludwig Wittgenstein (IQ: 190)
Ludwig Wittgensten was an Austrian philosopher, who brought significant improvements in the philosophy of language, theory of mathematics and logic. Tractatus Logico-Philosophicus was his popular lifetime work and it was published in Vienna in 1918. His works influenced many intellectuals, such as Moore and Russell; and Schopenhauer and Kierkegaard. Wittgenstein brought us to the limit of human cognitive and language ability. His desire was to define a solution to answer all philosophical problems. After he moved to Cambridge UK, Wittgenstein improved his own works and developed a new way of understanding languages.