Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 5
Paul Thomas Mann was a German novelist, short story writer, social critic, philanthropist, essayist, and the 1929 Nobel Prize in Literature laureate. His highly symbolic and ironic epic novels and novellas are noted for their insight into the psychology of the artist and the intellectual. His analysis and critique of the European and German soul used modernized versions of German and Biblical stories, as well as the ideas of Johann Wolfgang von Goethe, Friedrich Nietzsche and Arthur Schopenhauer.
Mann was a member of the Hanseatic Mann family and portrayed his family and class in his first novel, Buddenbrooks. His older brother was the radical writer Heinrich Mann and three of Mann's six children, Erika Mann, Klaus Mann and Golo Mann, also became significant German writers. When Adolf Hitler came to power in 1933, Mann fled to Switzerland. When World War II broke out in 1939, he moved to the United States, then returned to Switzerland in 1952. Mann is one of the best-known exponents of the so-called Exilliteratur, German literature written in exile by those who opposed the Hitler regime.
Mann's work influenced many later authors, including Heinrich Böll, Joseph Heller, Yukio Mishima. Wikipedia

Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 5
As quoted in The New York Times (21 June 1939)
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 2, “At Tienappels’,” (1924), trans. by H.T. Lowe-Porter (1928).
Thomas Mann book Death in Venice
Source: Death in Venice (1912), Ch. 2, as translated by David Luke
Freud and the Future (1937)
“Beauty can pierce one like pain.”
Buddenbrooks [Buddenbrooks: Verfall einer Familie, Roman], Pt 11, Ch. 2
Letter to the dean of the Philosophical Faculty, Bonn University (January 1937)
Responding to anti-semitic propaganda and to criticisms of German writers living in exile during the early years of the Nazi regime in Germany, as quoted in "Homage to Thomas Mann" in The New Republic (1 April 1936) http://www.newrepublic.com/article/114269/thomas-mann-stands-anti-semitism-stacks
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 4
Thomas Mann book Tonio Kröger
Source: Tonio Kröger (1903), Ch. 9, as translated by Bayard Quincy Morgan
Buddenbrooks [Buddenbrooks: Verfall einer Familie, Roman] (1901). Pt 8, Ch. 2
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 4
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 5
Suffering and Greatness of Richard Wagner (1933)
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 6
“The positive thing about the sceptic is that he considers everything possible!”
Attributed as a statement of Mann in the 1920s in Chariots of the Gods? : Unsolved Mysteries of the Past (1969) by Erich von Däniken, as translated by Michael Heron
Thomas Mann book Doctor Faustus
Source: Doctor Faustus (1947), Ch. 9
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 7
Thomas Mann book A Man and His Dog
Herr und Hund (A Man and his Dog) (1918)
"This War" (1939); also in Order of the Day (1942)
Thomas Mann book Death in Venice
Source: Death in Venice (1912), Ch. 3, as translated by David Luke
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 6
“The beautiful word begets the beautiful deed.”
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 4
“A man’s dying is more the survivors’ affair than his own.”
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 6
Thomas Mann book Tonio Kröger
Source: Tonio Kröger (1903), Ch. 8, as translated by David Luke
Letter from Naples, Italy to Otto Grautoff (1896); as quoted in A Gorgon's Mask: The Mother in Thomas Mann's Fiction (2005) by Lewis A. Lawson, p. 35
"Sleep, Sweet Sleep" [Süßer Schlaf] first published in Neue Freie Presse [Vienna] (30 May 1909), as translated by Helen T. Knopf in Past Masters and Other Papers (1933), p. 269
“Only he who desires is amiable and not he who is satiated.”
Thomas Mann book Confessions of Felix Krull
Bk. 1, Ch. 8
Confessions of Felix Krull, Confidence Man (1954)
Thomas Mann The War and the Future
Speech, "The War and the Future" (1940); published in Order of the Day (1942)
Thomas Mann book Death in Venice
Source: Death in Venice (1912), Ch. 4, as translated by David Luke
Thomas Mann book Death in Venice
Source: Death in Venice (1912), Ch. 4, as translated by David Luke
“Asia surrounds us — wherever one’s glance rests, a Tartar physiognomy.”
Thomas Mann book The Magic Mountain
Asien verschlingt uns. Wohin man blickt: tatarische Gesichter.
Variant translation: Asia devours us. Wherever one looks: Tartar faces.
Settembrini in Ch. 5
The Magic Mountain (1924)
Thomas Mann book The Coming Victory of Democracy
The Coming Victory of Democracy (1938), p. 14, translated by Agnes E. Meyer, Knopf (1938)
“O scenes of the beautiful world! Never have you presented yourself to more appreciative eyes.”
Thomas Mann book Confessions of Felix Krull
Bk. 2, Ch. 4
Confessions of Felix Krull, Confidence Man (1954)
Thomas Mann book Confessions of Felix Krull
Bk. 2, Ch. 4
Confessions of Felix Krull, Confidence Man (1954)
As quoted in Sculpting in Time (1996), by Andrei Tarkovsky, p. 56
Thomas Mann book Death in Venice
Source: Death in Venice (1912), Ch. 5, as translated by David Luke
Speech at the Prussian Academy of Art in Berlin (22 January 1929); also in Essays of Three Decades (1942)
“Disease makes men more physical, it leaves them nothing but body.”
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 4
Thomas Mann book Death in Venice
On a short story of the character, "Gustav Aschenbach". Ch. 2, as translated by David Luke
Death in Venice (1912)
Letter, (1950); as quoted in Thomas Mann — The Birth of Criticism (1987) by Marcel Reich-Ranicki
“Beer, tobacco, and music,” he went on. “Behold the Fatherland.”
Thomas Mann book The Magic Mountain
"Herr Settembrini" commenting on Germany, in Ch. 4
The Magic Mountain (1924)
Thomas Mann book Tristan
Source: Tristan (1902), Ch. 8
Thomas Mann book The Magic Mountain
Settembrini on the Magic Mountain Society, in Ch. 5
The Magic Mountain (1924)
Thomas Mann book The Magic Mountain
Source: The Magic Mountain (1924), Ch. 5