—  Isaac Asimov, 1920-1992, American Sci-Fi writer

—  Lao-Tzu, 6th cent. BC, Chinese philosopher

—  Georg Christoph Lichtenberg, 1742-1799, German author of maxims

—  George Washington, 1732-1799, the first American President

—  Rumi, 1207-1273, Persian mystic & poet

—  Saul Bellow, 1914-2005, Canadian-American writer, Nobel 1976

—  William Butler Yeats, 1865-1939, Irish poet, Nobel 1923

—  Dante, 1265-1321, Italian poet

—  Pitigrilli (Dino Segre), 1893-1975, Italian writer

—  Honoré de Balzac, 1799-1850, French writer

—  Charles Bukowski, 1920-1994, American writer

—  Nikos Kazantzakis, 1883-1957, Greek writer

—  Terry Pratchett, 1948-2015, British writer

—  Joseph Campbell, 1904-1987, American academic

—  Simone Weil, 1909-1943, French philosopher

—  Charlotte Brontë, 1816-1855, English novelist & poet

—  Antonio Machado, 1875-1939, Spanish poet & playwright

—  Odysseas Elytis, 1911-1996, Greek poet, Nobel 1979

—  Adolf Hitler, 1889-1945, German dictator

Κόσμον τονδε, τον αυτόν απάντων, ούτε τις θεών ούτε ανθρώπων εποίησεν, αλλ' ην αεί και έστιν και έστε πύρ αείζωον.

—  Heraclitus, 544-484 BC, Ancient Greek philosopher

Πυρ μαχαίρα μη σκαλεύειν.

—  Pythagoras, 580-490 BC, Ancient Greek philosopher

—  International proverb

—  English proverb

—  English proverb

—  from the film To Have and Have Not (1944)