Otto Weininger (German: [ˈvaɪnɪŋɐ]; April 3, 1880 – October 4, 1903) was an Austrian philosopher. In 1903, he published the book Geschlecht und Charakter (Sex and Character), which gained popularity after his suicide at the age of 23. Today, Weininger is viewed as misogynistic and antisemitic in academic circles,[3] but was held to be a great genius by the philosopher Ludwig Wittgenstein and the writer August Strindberg (see discussion below).