Friedrich Heinrich Jacobi (German: [jaˈkoːbi]; 25 January 1743 – 10 March 1819) was an influential German philosopher, literary figure, and socialite. He is notable for popularizing nihilism, a term coined by Obereit in 1787, and promoting it as the prime fault of Enlightenment thought particularly in the philosophical systems of Baruch Spinoza, Immanuel Kant, Johann Fichte and Friedrich Schelling. He was the younger brother of poet Johann Georg Jacobi and the father of the great psychiatrist Maximilian Jacobi.